The urologist found nothing wrong so I went GI. My doctor thought it might be muscle related but did nothing but give me levsin(didn't do anything..)... He wanted me to do a colonoscopy(I'm 21 and had one already 5 years ago), stool tests, blood tests(already did them), and a catscan(2 years of radiation equivalent..)... So we decided to go to the top doctor for GI in Staten Island... after 5 minutes of hearing my history and examining me he discovered that it was a pinched nerve in my middle back that radiates into the left low stomach area causing the muscle problems... Too many GI doctors don't know what they are doing... be careful and if something doesn't seem right with one doctor, go to another, preferably better one! Off to bed I go.