Hi friends

I really need help from u people. I occasionally get these pain the in the left side of my stomach right after eating in maximum an hour. This painstarts in my stomach and later on extends over to the back as well, sometimes i even vomit. The first time i got this pain i went to the doctor he told me i was having a intestinal infection and i was prescribed antibiotics, it had subsided that time. But later on it has occurred many times and i dont know how to relieve myself from this pain. So please help!!!