Period after Treatment

Cristina • Cancer survivor (Hodgkin's lymphoma); hobbyist photographer/editor; Archaeology student at Johns Hopkins University; 22.
So during chemotherapy, my period was pretty light and irregular. The first one after was really heavy and I had absolutely terrible cramps. The second one I'm on now is giving me really bad cramps. 
The thing is, I've NEVER had cramps before treatment, and I was just wondering is this normal? Am I going to eventually get back to not having such bad cramps?