Stmach Problems, Removing Gallbladder?

Well over the Past year and half Ive been having stomach problems. When i went to hospital they found bile in my stomach so i have bile reflex, and erodible bowl. It was really bad during the mornings and in school. After eating different and taking miraLAX every day its better but not good enough. I Heard that removing the gallbladder could help, im only 15 and i don't want to drop out, but if it goes on i will probably have too. Im going to talk with my stomach doctor about it. I dont eat to healthy, mostly cereal pizza Raman noodles just bout every day. What should i do cause i dont want to remove something of my body if theres a fix