I finished chemo in Otober 2005 and started taking tamoxifen. The last period I had was July 2005. Two weeks ago I started having light bleeeding which surprised me. It has since turned to heavy bleeding. I have been having some emotional difficulty and stress and did not have my Oncologist refill the prescription for tamoxifen after my last visit in July. I assume that this change is caused by the fact that I haven't taken the medication as perscribed, but could use a little assurance...Has enyone else experienced this. I have heard that after 2 years periods rarely, if ever, resume. I am 46 years old.