Hi Pennypig
I have only been on tamoxifen for 9 months. I had no bleeding at all for the first 6 months and since then have had light bleeding for a few days every 2/3 weeks. I didn't think anything of it as just assumed it was the tamoxifen still settling down in my system, but when I mentioned it in passing to my BCN she told me I must see my GP and get a two week referal to a gyneacologist as there is an increased risk of ovarian/endometrial cancer and endometriosis which would need to be ruled out with an ultrasound.
I saw the gyneacologist and the scans were clear - she told me she is amazed by the amount of women that she sees with abnormal bleeding while on tamoxifen, but it is always best to get it checked out.
Good luck
Lu xx