Blah!

Ok so today me and Bryan went to eat lunch at this chinese place. I was fine when I went in there and fine the whole time I was eating. Then all of sudden I start getting this BAD pain in stomach up close to my chest were my gallbladder USE to be. I dont have my gallbladder so I know it wasn't that but thats exactly what it felt like! I told Bryan I felt like I was dying and I doubled-over in the booth it hurt so bad. Then just like my gallbladder pains it was gone.. WHAT could be causing this??