I'm nearing the end of my chemo and will have to take Tamoxifen too after six weeks of radiontherapy. I've a read a lot about the bad symptoms and I am apprehensive about that. But on the other hand I have also read that it is higly effective in preventing the spread of hormone-related breast cancer. Apparently it also controls cholesterol levels and helps with bone density - no osteoporosis.
I'm 46 so menopause is not far away for me anyway. At 37 it must be a bit harder to face those sort of symptoms. But from what I've read being younger also means you've got more estrogen circulating in your body, you're therefore more at risk of the cancer using that eostrogen to regrow.
If I were you I would hang in there with the Tamoxifen. As some of the other women have suggested, talk to your oncologist about the mood swings. When I raised my fears about Tamoxifen with my oncologist she also said there are low dose anti-depressents that are very effective in conrolling the symptoms. And if you can manage to fit it in, regular exercise might help too. Good luck. I hope you can find a solution that works for you. Janet.