 [ Symptoms ] stomach ache for the past week  for the past week i have been waking up to an upset stomach it is not a nauseous or i am going to throw up upset stomach just achy then turns to hunger pains and goes away when i eat something i am on birth control and my boyfriend and i always use a condom and my period came at the expected day and lasted the normal amount of days what could be causing the upset stomach [ Disease ] hi i recommend doing a spinal tab to check for multiple sclerosis also a nerve conduction velocity will be helpful good luck