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Topic: pregnant on tamoxifen

Forum: Hormonal Therapy - Before, During and After — Risks and benefits, side effects, and costs of anti-estrogen medications.

Posted on: Jan 25, 2012 07:59PM

Tricia19 wrote:

I have been on tamoxifen for four months and am 5 weeks pregnant.  Has anyone had a pregnancy while on tamoxifen?  Was the baby health?  My oncologist is advising termination but it seems to me that the studies are not conclusive that tamoxifen causes birth defects.  Any information on personal experiences or studies would help me so much.

Thank you for your help -

Trish

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Posts 1 - 19 (19 total)

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Jan 25, 2012 11:15PM kk11 wrote:

Hi Tricia - I don't have a personal experience with this, but just wanted to give you some support. I can understand how you may not want to terminate without conclusive evidence that it will cause birth defects. Have you asked your OB whether they could rule out the most serious potential defects through an NT scan? Also, if you haven't already, I would definitely stop taking the Tamoxifen until you decide what to do. I can only say that my fertility specialist recommended waiting 6 weeks after stopping Tamoxifen to try to get pregnant, so he definitely had his concerns, but I don't know if he would recommend termination. Tough decision, but one that only YOU can make. Listen to your doctors opinion, but remember they are human and don't always have the answers. You have to make the decision you think you can live with. Best of luck to you and please keep us posted on what you decide to do.

Kristien; 31; 2 1/2 months of chemo for Molar Pregnancy. Dx w/ BC 2 months later @28. Uni MX w/ TE 5/25. More chemo -4XAC; 4XTaxol. Finished 10/4/11. Exchange on 11/4/11. Plus Tamox. No children yet, but hopeful for the future. Dx 4/19/2011, IDC, 2cm, Stage IIA, Grade 3, 0/6 nodes, ER+/PR-, HER2-
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Jan 26, 2012 09:31AM peggy_j wrote:

What a difficult situation. Sorry you are going through this. I don't have experience with this but when I met with my new MO-referred GYNO late last year, we discussed birth control options while I'm on tamox. I asked what happens if I accidentally got pregnant and she said she would recommend terminating the pregnancy. FWIW, I checked PubMed and there is at least one study that shows the rates of possible congenital birth defects.

Dx 2/2011, IDC, <1cm, Stage IA, Grade 1, 0/3 nodes, ER+/PR+, HER2-
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Jan 26, 2012 02:59PM , edited Jan 26, 2012 02:59PM by rgiuff

Research well the effects of tamoxifen on a fetus before you make your decision.  Also how high is the possibility that a fetus will even be affected and exactly what type of problems it could cause.  I believe I've read of cases, possibly on here, of women who became pregnant while on tamoxifen and went on to have healthy babies.  You also have to take into consideration your moral beliefs on this issue, as well as whether you are willing to wait for a future time to try to get pregnant again.

RoseG Dx 4/6/2008, IDC, <1cm, Stage IB, Grade 1, 0/4 nodes, ER+/PR+, HER2- Dx 4/2008, IDC, <1cm, Stage I, Grade 1, 0/4 nodes, ER+/PR+, HER2- Surgery 05/19/2008 Lumpectomy in one or both breasts: Lumpectomy in my left breast Radiation Therapy 08/19/2008
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Jan 27, 2012 10:49AM Tricia19 wrote:

Thanks everyone for your responses!  I did find a study online written in the Oncologist which had a chart that showed how long during the pregnancy women were on tamoxifen and the birth defects associated with it.  My obgyn said many of those defects can be detected through testing.  I am trying to take this step by step.  The next step being getting a scan in two weeks to check for the heartbeat.  I also have a consultation with another doctor on Monday and will schedule an appointment with my oncologist to visit in person. If you hear of any studies or people I can connect with please keep me in mind.

Thanks

Dx 6/10/2004, 1cm, Stage I, 0/1 nodes, ER+/PR-, HER2-
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Jan 30, 2012 09:19PM mdg wrote:

Can they do a genetic test on the baby (CVS test)?  That can be done around 10 weeks I believe. I had it done when I was pregnant to rule out defects (not from tamoxifen or BC related).  Google it.  It may be an option.  I got the results back in about a week.  We had the results before we even told anyone other than immediate family I was pregnant. 

Maria Visit my BC Blog at breastcancerwontdefineme.blogs... Dx 12/13/2010, IDC, 1cm, Stage I, Grade 2, 0/2 nodes, ER+/PR+, HER2- Hormonal Therapy 05/18/2011 Surgery 12/09/2011 Reconstruction of my left breast: Nipple reconstruction; Reconstruction of my right breast: Nipple reconstruction Surgery 06/21/2011 Reconstruction of my left breast; Reconstruction of my right breast Surgery 01/26/2011 Mastectomy of one or both breasts: Mastectomy of my right breast; Prophylactic (also called preventive) mastectomy of one or both breasts : Prophylactic (also called preventive) mastectomy of my left breast ; Reconstruction of my left breast: Tissue expander placement; Reconstruction of my right breast: Tissue expander placement Surgery 12/22/2010 Lumpectomy in one or both breasts: Lumpectomy in my right breast Chemotherapy 03/02/2011 Cytoxan (chemical name: cyclophosphamide), Taxotere (chemical name: docetaxel)
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Feb 7, 2012 01:56PM an1245 wrote:

I have the same question. Please keep us posted with your experience and decissions that you make. While I am not pregnant but I was wondering if I could be pregnant once I am done with my chemo and don't have to wait another 5 years.

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Feb 7, 2012 02:28PM ICanDoThis wrote:

I have a friend who conceived while on Tamoxifen. Her little girl is 2 now, and just gorgeous. If you want to PM me, I'll see if she is available to chat.

I do have one of "those" stories. My mom had multiple pelvic x-rays and several surgeries for kidney and bladder issues. When she seemed swollen after her last surgery, they took her down for another x-ray; my father said I waved. They would have terminated the pregnancy, but she wasn't strong enough. They had a place reserved in one of those homes for deformed kids.
The night I was born, my mother's surgeon took me around to all the floors where my mother had been a patient, and showed off "their" baby.
I'm 63 now, and have a healthy daughter of my own.

Just, have you stopped the tamox?

Sue - Proud to be Krista's Mom Dx 12/28/2007, IDC, 1cm, Stage I, Grade 1, 0/3 nodes, ER+/PR+, HER2-
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Feb 12, 2012 11:07AM Klawless9 wrote:

Tricia

Could you post the link to that chart you saw in the Oncologist? Thanks so much.

 Kendall 

Dx 8/20/2009, IDC, 3cm, Stage IIB, 2/22 nodes, ER+/PR+, HER2-
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Apr 12, 2012 11:20PM Prettyinpink426 wrote:

Can you please tell me more about your friend who  became pregnant while on Tamoxifen. I am in the same situation...

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Aug 27, 2012 10:00PM Jaslyn wrote:

I fell pregnant while on tamoxifen, I realised when I was 6 weeks pregnant. My baby was born on March 15 2012 and he is fine.

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Apr 28, 2013 04:58PM Jillianhas wrote:

I have been on tamoxifen for two years. My periods did not stop. But we're between day 36 and 41. I am now on day 48. I'm concerned about pregnancy. Has this happened to anyone else? Checking for pregnancy is tricky since hormone levels are so low... How has anyone else confirmed pregnancy? Jhas@live.ca

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Apr 28, 2013 05:35PM bluepearl wrote:

Tamoxifen can but often doesn't harm the fetus. It's a coin toss but mostly favors your baby being ok. My main concern would be for YOUR health getting pregnant so soon after breast cancer....maybe this was the oncologist's concern too...but even that shouldn't be too much of a problem. I guess it's a matter of how much, if any, problems you may want to end up with vs having this baby. I think getting all the tests done is a good idea and from there, jump into a decision with the information gathered. Crikey...every pregnancy has risks.

Dx 1/6/2011, IDC, 1cm, Stage I, Grade 1, 0/7 nodes, ER+/PR+, HER2- Dx 2/2013, IDC, <1cm, Stage I, Grade 3, 0/3 nodes, ER+/PR+, HER2- Hormonal Therapy 03/17/2013 Surgery 03/09/2013 Mastectomy of one or both breasts: Mastectomy of my right breast; Lymph node removal (also called dissection): Sentinel lymph node removal (also called dissection) , Lymph node removal (also called dissection) on my right side Surgery 02/11/2011 Mastectomy of one or both breasts: Mastectomy of my left breast; Lymph node removal (also called dissection): Underarm (axillary) lymph node removal (also called dissection) , Lymph node removal (also called dissection) on my left side
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Oct 20, 2013 06:24PM 1cb wrote:

hi Jillianhas!

Just wondering how things turned out for you?

I am in a similar situation.... Periods usually come every 32 days (plus or minus a few days... Not the same each month) & i am sitting at 42 days! I did a preg test this morning and it was negative.... I am nervous about continuing the tamoxifen until I get my period in case I'm pregnant.

I've been taking tamoxifen for a year now.

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Oct 21, 2013 09:12PM slg76 wrote:

I was on tamoxifen for a year and a half after my treatment and then stopped taking it to try to have a baby. My doctor insisted on me having an IUD while on tamoxifen so that pregnancy was not a possibility. They wouldn't take out my IUD until I had been off the tamoxifen for three weeks. Of course I had a Paragaurd IUD because it doesn't release hormones. Please, for the ladies that aren't pregnant, be careful with your birth control while on tamoxifen!!!!

Tricia, I'm encouraged to hear of these healthy babies born after tamoxifen exposure. I'm so sorry you are in this position. It sounds like you are handling it well and taking all things into consideration. For your peace of mind, pregnancy after breast cancer is NOT shown to increase your chance of recurrence. I hope that you and the baby are healthy and that you come to a decision that you are comfortable with. Sending a prayer your way.

Dx 5/2010, IDC, Stage IIIA, 0/8 nodes, ER+/PR+, HER2- Hormonal Therapy 02/14/2011 Surgery 12/11/2010 Lumpectomy in one or both breasts: Lumpectomy in my right breast; Lymph node removal (also called dissection): Underarm (axillary) lymph node removal (also called dissection) , Lymph node removal (also called dissection) on my right side Radiation Therapy Chemotherapy 05/31/2010 Adriamycin (chemical name: doxorubicin), Cytoxan (chemical name: cyclophosphamide), Taxotere (chemical name: docetaxel)
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Jan 25, 2014 12:32PM Snoopy73 wrote:

Hi ladies, i have been taking tamoxifen for 2 years now. I removed my IUD in sept 2013 after having it on for 5 years, was supposed to put another one but have not gotten around to do it. I am now on day 36 and no periods...i am so scared i may be pregnant, bought the home preg test but have not taken it:-( i am 40 yrs so high risk as it is...dont know what to do

Completed 4 rounds of chemo T/C; completed 6 weeks of Rads!! now onto Tamoxifen!!! Oh God keep on watching over me and give me strenght & courage...There surely is light at the end of the tunnel!! Dx 4/27/2011, IDC, 2cm, Stage II, Grade 2, 1/6 nodes, ER+/PR+, HER2-
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Jan 25, 2014 12:47PM , edited Jan 25, 2014 12:47PM by Snoopy73

This Post was deleted by Snoopy73.
Completed 4 rounds of chemo T/C; completed 6 weeks of Rads!! now onto Tamoxifen!!! Oh God keep on watching over me and give me strenght & courage...There surely is light at the end of the tunnel!! Dx 4/27/2011, IDC, 2cm, Stage II, Grade 2, 1/6 nodes, ER+/PR+, HER2-
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Jan 25, 2014 02:52PM Hutchins3 wrote:

First, my heart goes out to you.  Not the same, but my sister got pregnant while on accurate and was told there was no way the baby would be healthy or perhaps viable.  My niece is perfectly healthy.   Good luck with whatever you decide.

Dx 3/25/2013, IDC, 1cm, Stage I, Grade 2, 0/2 nodes, ER+/PR+, HER2+ Hormonal Therapy 09/14/2013 Surgery 04/15/2013 Mastectomy of one or both breasts: Mastectomy of my right breast; Lymph node removal (also called dissection): Sentinel lymph node removal (also called dissection) , Lymph node removal (also called dissection) on my right side ; Prophylactic (also called preventive) mastectomy of one or both breasts : Prophylactic (also called preventive) mastectomy of my left breast Chemotherapy 05/12/2013 Carboplatin (brand name: Paraplatin), Taxotere (chemical name: docetaxel)
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Feb 26, 2014 04:13AM EstherDeas wrote:

hi all, I hope you all got on ok. I ovulated around Friday. We had unprotected sex Saturday and Sunday. I've been on tamoxifen since October. I've just left a message for my bcn about it but u am worrying about it. I won't even have consideration for terminating. Can't even do a pregnancy test until next week. Xx

Dx 3/22/2013, IDC, 1cm, Grade 3, 0/2 nodes, ER+/PR+, HER2-
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Mar 19, 2015 03:27PM , edited Mar 19, 2015 03:28PM by Gleny26

I have been on tamoxifen for 6 months and just found out I am 4 weeks pregnant. My oncologist is also telling me to abort and think of my cancer reoccurring during pregnancy along with the birth defects associated with it. I don't want to abort.

God, Love, Family & Friends got me through it.