What Could Pain In The Right Abdomen Post Gallbladder Removal Indicate?

I have pain in my stomach on the right side where my gallbladder was. Now the same pain has came back it feels just like when my gallbladder was inflamed and had to remove it it s identical pain I have been stressed out a lot lately and I have a history of ulcers in my stomach. Please tell me what should I do? Or what it could be?