Is this a serious sickness?

Well idk if this will help at all. But i have ocd anxiety and depression. At 2am i woke up and threw up. I went back to bed and it happened about 4 more times around an hour apart. I didnt go to school today, im 16, and durring the day i got a headache. Ita still thier. Its like pressure on my forehead. But i dont have snot or drippy nose or anything. I got out of bed and was gettimg ready to shower cuz i feel gross but i got dissy. Not the type of dissy u get when u get up to fast, but like a difforant kind of dissy. Dont suggest the doctor if i dont need to go cuz chances are im not anyways. Just please tell me what this is. Thanks- Becky