Michelle, Julie and I are like 2 peas in a pod on this issue....I took it from age 31 to 36. I had NO hot flashes, NO menstrual problems, NO mood changes, NO real side effects. Every one of is very different, but there is a good chance you will be very lucky. My periods were quite regular on Tamoxifen (more regular than before the Pill, but not as regular as on the Pill), and not heavy. Frankly, since finishing it in June, my periods have been much heavier, but that is my uterus trying to shed the thicker lining, and supposedly it should lessen over time.
I did gain weight slowly, but I cannot blame it on Tamoxifen alone, my diet is lousy. I felt no different on it or off of it.
My advice is to take it tomorrow and again the next day. Keep going...and if your side effects become intolerable, you can talk to the doc or d/c the tamoxifen...no one can force you to take it.
Please consider taking it...it is credited with reducing the recurrance rate and mortality rate in younger women with BC. If you hate it, then stop taking it...but if you don't take it, you'll always wonder...
Like Julie, I am so grateful that Tamoxifen was a weapon in the arsenal that I had available.
Hang in there!