Some discomfort

4 months ago, yearly mammo showed another dcis, behind my lumpectomy scar where my old dcis was —3 1/2 years ago. Surgeon wanted to watch it, and have me take a "baby" amt of tamox. Which I haven't. The dcis was very small. (I'm due for my 6 mos mammo follow up in two months.) But, I've noticed some pain in the breast, or should I say a sensitivity. My stereotactic biopsy left quite a bruise and discomfort 4 months ago, so I didn't really notice this sensitivity recently until now. I don't feel anything abnormal, just some discomfort. Anyone have this feeling? Is this par for the course, or something else?