 [ Symptoms ] can ibs cause migraines  i think i might have ibs i have ruled out pregnancy because i have taken 3 tests that all came back negative but i have been constipated lately and it feels like there is something heavy in my stomach that is really uncomfortable to lay on my stomach i can feel something moving gas maybe and i have been burping a lot lately and stared getting migraines frequently now my abdomen is swollen and i can not suck in my stomach [ Disease ] i also have a loss of appetite