For The Past Few Days Whenever I Eat Or After

For the past few days whenever I eat or after I eat my stomach gets really bad cramps. And I get full very quickly. I can only eat very little. And I try not to force myself or I feel like I will vomit. And my head hurts and at night I get very edgy. It feels like I don't have stomach anymore. I'm just really concerned. And I don't have a doctor right now because of my age. I stopped having a doctor when I was 19. I'm 20 now and I'm trying to find a doctor as soon as possible.