Was this doctor negligent?

Since you forgot to mention how long you were already going to this GI then it's hard to say exactly where his head was at. You do need an attorney that practices medical malpractice. These know both law and medicine and they most aways give free consults. First though you need to concentrate on getting better yourself. This is the most important thing to do and the stress of already going through this once is too much to be trying to deal with it while your body needs everything to help you go through whatever needs to be done to get you healthy again. Since your first thing should be getting a GI you can have confidence in try finding one through word of mouth. You should know someone that either works in or around a hospital and can help you here. What about relatives and/or friends or relatives of friends? Someone must have a name for you to check out, and please check this one out first. Make sure your first impression is that good feeling as first impressions are usually right. Trust in yourself as you've gotten this far even if it meant taking things into your own hands. Now, get rid of the stress by getting a new GI first and your health back second. Then if you still want to pursue a malpractice lawsuit, then go for it too. Good luck and God Bless