I am 53 years old. In January of 2002 I started taking Tamoxifen after having been treated for breast cancer. I had one period in January and then had a few weeks of very minimal bleeding daily (more like consistent spotting). Upon seeing my gynocologist, I had an endometrial biopsy. That was negative. In March ( after a total of 8 weeks of spotting)I took a progestin for one month. I had one more period in mid April 2002 and never had another one to date. My gynocologist tells me that I do not have to worry about using birth control if I have not had a period for a year. My question is: could the tamoxifen have caused me to cease having periods for 1 year? Can I be confident that my Doctor is correct and that I am, in fact, menopausal and do not need to use birth control at this point? Please advise.
Thanks, Novi