I have a reoccurring pain in my mid abdomen on the right side. It often manifests as a sudden muscle cramp, but also lingers at times. In addition, I have a reoccurring pain in my extreme lower back. It hurts a lot if I stand for a long time, and burns pretty much constantly. If I flex my spine forward and back pain radiates throughout my pelvis. It feels like it s located right above my rectum/above or behind my cervix. I have been checked for ovarian fibroids and there was nothing, and have a history of PMDD which I take estrogen for, but no one has been able to tell me why I get this debilitating pain in my pelvis or why I get the cramp in my abdomen. It s located right along the rib cage just under my right breast.