I have been having a strange tightness in my mid-back for about a month accompanied by constipation and bloating. I went to my dr. and had a CT scan and bloodwork and it ruled out cancer (major relief), results came back that I have an inflamed mesentery and and they also saw an ovarian cyst. Dr. prescribed antibiotics, fast forward two weeks (I m still having the strange back tightness) and last night I woke after 2hrs sleep feeling nauseous, made it to the bathroom then I passed out, my husband brought me back, then I passed out again after which I felt tingly all over and vomited all of the contents of my stomach. My stomach continued to hurt for a couple of hours and also my head. Today I still feel queasy. I m a 46 yr old female, and am currently on my period. Any ideas on what might be happening?