I went cold turkey off my very first med which was Seroquel and all the ones after and when I saw my Pdoc he was very surprised I didn't have any problems regardless if I was on them a short or long term. I will say that coming off Lithium was pure hell, yeah that IS odd.

And as LastQuestion mentioned it can be due to the withdrawl of chemicals.

Can you try the BRAT diet ? Bananas, Rice, Applesauce and Toast. Maybe following that for a few days or a week could help everything settle down a bit.

Has your Pdoc offered to put you on a stomach med like protonix or the like to help you manage? if not, ask...

I'm sorry your dealing with all this mess, I hope your feeling better really soon