Kris, I was told that one side effect of radiation/chemo treatment was early menopause. In my case, my period was regular before and even during treatment but once treatment ended, I didn't have one for several months. My oncologist told me that some women would have it back some time later. I did have it return for two months and after that, bye bye to the troublesome periods. I am not really concerned about that since I am around the age of having menopause and I am glad that I don't have to experience that menstrual pain any longer. If you are much younger, there is still hope that the period will return after even 1 or 2 years. But I don't think the doctor can give you a definite answer.

Karen