Welcome to Healing Well. Sorry to hear that you are suffering so much with this headache. We are not Doctors here just sufferers ourselves so are unable to give medical advice. However, it does sound like you are getting some tension type headaches as well as Migraine.
So pleased you are able to get some relief from the meds you are taking at the moment. As far as the epilytic activity is concerned, you may find it useful to talk to the guys here on the Epilepsy Forum!
Co-Moderator of the Migraine/Headache Forum