Hi, I Have Had Stomach Issues For A While Now

Hi, I have had stomach issues for a while now and I feel like there could be a lot of reasons why but I don't know why. My symptoms are occasionally throwing up after 5-10 minutes of eating, feeling of disconnect or disassociation, slight dizziness, diarrhea after most meals. I feel bloated a lot after eating, I also get very smelly gas. I struggle with Social Aniexty, Stress, and has a history of smoking. I have also seen a Traumatic therapist because of my family history and dealing with death of both parents.