Last night I think I passed a gall stone.It was yellow and about the size of a pea,but oval in shape.I had a very painful time(in my abdoman) with this but after I thru up and had diarea I felt OK.A while back I was diagnosed with GERD (in May) and have medication for that,with no real releif.If it was a gall stone, do I have more?I am sure it is causing other problems with my heart and stomach,Could this be posible?