how would i know if i have a stomach ulcer?

well first of ulcers will give you a terrible burning pain which will be unbearable..secondly there are 2types of ulcers one of which will be relieved after eating something and the other aggravated by food intake.also,ulcers will cause you to vomit because they will irritate the nerve endings and give you the "gag reflex" if what you're going through is an upset stomach your biggest problem will be stomach cramps and diarrhea..the same applies to indigestion wherein you will have the cramping pains and loads a diarrhea if yours is a stomach upset there are chances that you're gonna be severely dehydrated so keep the fluid intake going ok?just keep drinking lots of fluids and take in ORS packets which will be available at the medical store if after reading this you think you have an ulcer then go to your doctor ASAP and don't let the condition aggravate..the specialist you are looking for is a GASTROENTEROLOGIST all the very best..hope this was helpful!