Hi, I'm an 18 year old female. My sister had her gallbladder removed at age 22, and she has the same body type as me. I weigh 125, and I'm 5'9". I've always had an irritable stomach, but I've been getting painful cramps in my upper abdomen, and my stool is light-colored. I also seem to be constipated. Do you know what this might be?