I have had really bad nervousness lately when it occurs i feel popping in my head, rapid heart beats, nausea to the point of vomiting. what is this?

Could be panic: You might be exhibiting the symptoms of a panic attack. Please have an evaluation from a psychiatrist or clinical psychologist so you can receive proper treatment.

Possibilities: Sounds like this could be a migraine headache id it is going on for hours, but if it is more like 2-20 minutes, it could be a panic attack as well. You may want to consult a neurologist or psychiatrist to help you determine what treatment may be best to relieve these symptoms.