I Suffered From Constipation And Didn't Have A Bowel Movement

I suffered from constipation and didn't have a bowel movement for almost 2 months. I went to GI and had an endoscop and a colonoscopy. Prep took me 7 days with not much movement. Procedure was inscrusiating. Very painful. I am bloated and pass gas a lot. I'm neaseated off and on. I feel like there is something under my lower right ribs. They said there was nothing wrong with me. GI had me do a CT. Still nothing. I look bloated and have now gained 8lbs sense eating food again after these procedures. Iron was very low and getting lower. GI put me on iron pills and merilax 1 week ago. Super tired still. Light headed at times. Exhausted. Why still nothing? Help!