I'm a 19 yr old guy. I'm pretty active and healthy as far as I know. The pains started to come about a week ago after I vomited green bile and blood. The pain feels like I'm hungry it doesn't matter hiw much I eat it doesn't help some times it makes it worse. I weighed about 140 pounds the day before the pains came. I lost almost 10 pounds in 4 days. I'm going to the bathroom like I normally would. Please help!!