Welcome to Healing Well. Sorry to hear you are having a rough time with your headaches. We do not have any medical training here so we are not able to diagnose, but we can make suggestions from our own experiences.
But from what you tell me it does sound like a form of migraine, have you seen your Doctor? If so what has he said it is? Are you taking anything when you get these attacks? If so what are you taking?
If you have not seen a Doctor please make sure you see one as soon as you can, maybe ask to see a Neurologist!!! Please let us know how you get on?
Co-Moderator of the Migraine/Headache Forum