Topic: 28 years old, biopsy

I have three days to wait until my results come in, and thinking about all of this is starting to make me sick.

 I found a lump about two and a half months ago. I was overseas, but went to a doctor who did a sonogram and said it looked like some fibroid thing (I might have the name wrong). She couldn't be sure without a mammogram, but she didn't sound too worried so I decided to wait until I got back to the States before getting one done. I was busy for a month and didn't get a chance to schedule the appointment until a couple of days before I went overseas again. I expected everything to be fine. After all, I'm 28, in good health, and don't have a family history of cancer.

 On the sonogram, the doctor said it looked like the fibroid-word thing, but she did the mammogram too. Whatever she saw there made her want to do a biopsy, but since I had to leave, I waited until I was back overseas. Went to a doctor here who said it felt like the fibroid thing too, but then they did the biopsy.

First, they could only do one biopsy because I fainted. This is incredibly typical of me. I tried to let them do a second biopsy b/c I didn't want to have to come back, but went I fainted the second time, I did a mini-seizure thing (also typical for me) and shook too much for them to continue.

They're using the one biopsy for now. I'd be okay except for the conversation with my doctor before we left. She said there's an 80% chance of it being cancer. If the biopsy comes back negative, she'll want to do another biopsy. I asked what would happen if that one came back negative. She said, "Let me put it his way. It doesn't need to stay in you." Meaning even with negative biopsies, she thinks the lump needs to be removed.

So I've been trying to convince myself I have cancer for the last few days. It seems like a bad dream. I try to shove it out of my mind, but I can't, and I swear I've had something close to a panic attack. Not an extreme one, but still, tightness in the chest, nausea, etc. until I forced it from my mind.

Anyway, I guess what I'm wondering is how the doctor can tell from the mammogram and sonogram and - I guess - the one biopsy that hadn't been sent to the lab yet, that I have an 80% chance of it being cancer? And if they're convinced it's cancer, why do another biopsy (if the first comes back neg)? Why not skip to the next step? (I am trying to avoid another biopsy as I'm certain I will faint again, which is never pleasant and leaves me sick for 24 hours.)