A lot of digestive issues all my life what could it be?

For as long as I can remember I’ve had a lot of digestion issues. Like I remember I drank goats milk and got very sick felt like food poisoning but my family drank the SAME exact milk and never got sick. I ate Panda Express my husband too and I got sick and threw up. Basically I will eat out or something or food at home and I will get a terrible migraine and throw up but others who ate the same thing never got sick so it’s NOT the food. I’m so sick of it it causes me a lot of headaches and stomachaches and pain. Could it be a food intolerance? I’m so sick of it it’s just random foods not just dairy or gluten.