I am forty seven years old, was diagnosised with breast cancer two and half years ago. I was estrogen receptor positive, early stage, no lymph node involvement, stage 0- but had a large mass and had to have a masectomy. I take tamoxifin, and am still having pretty regular periods.
My question is- Do I need to take birth control precautions while on tamoxifin? My oncologist said I shouldn't have to while on this medicine, but the gynecologist said there was a slight chance I could get pregnant and should try the new IUD or something else w/o estrogen base. I really would love to avoid taking more medicine, but do not want to risk becoming pregnant.
What is your advice?