Hi Doc, I Have Been Having A Weird Pain In

Hi doc, I have been having a weird pain in my stomack when I walk or just sit then It just starts to pain for no reason and the pain is random, sometimes I can walk and sit all I want without having pain, sometimes it hurts so much that I lay on my bed crying and then the pain just go's away as fast as it started. I don't know what to do anymore can you help me please!