Stomach ache every time after eating

So I know I have gallstones, but I've rarely had the pain in my side before. I get an aching feeling in my right shoulder, but I don't know if that's the cause of it or not. It has been suggested I get it removed. But money. But I was wondering if it could cause stomach aches as well. Every time I eat I get a horrible stomach ache (not the right side pain at all) and I have diarrhea that smells like a septic tank and is bright yellow. Can a gallbladder cause all these symptoms without that ride side pain?

TIA!