Feeling super sick after eating.

Okay so this has nothing to do with anything on here but... I typically eat 1-2 times a day once in a blue mood do I eat 3 times a day. After I eat and I don't eat too much I feel super sick and nauseous. It's been like this for about 3 days and it makes me not want to eat. Because of the constant feeling of needing to throw up.  But of course I do because I kinda have too lol. Please don't tell me I have an eating disorder because I know for a fact I don't.  And I can't go to the doctor because I don't have any medical insurance right now with my dads new job. Any advice would help.