I am a breast cancer survivor 2004; my chemo treatment was doxorubicin and cyclophosphamide and radiation for 35 days. my question is I have chronic constipation, it started right after the chemo treatments, I am unable to have a bowel movement, unless I take something. this has been going on for 13 years. I have been diagnose with pelvic floor dyssynergia, is it possible my breast cancer treatment cause this? or medications due to multiple surgeries (back surgery, herniated disc, multiple foot surgeries)