Sorry to hear you are suffering with this. Do you get a runny nose, watery eye, blocked nose on the affected side, droopy eye?? Can you describe the pain? Is it burning?? stabbing?? throbbing???
Do you need to lie down with this pain or does it make you restless and want to pace???
Sorry about all the questions, but I work on a Helpline for Clusterheadache here in the UK and maybe able to help you. I must also point out that I am not a Doctor.
In any case it sounds like you need to see a Neurologist who is a Headache Specialist to get a proper diagnosis and treatment.
Look forward to hearing from you, take care
Co-Moderator of the Migraine/Headache Forum
DX: Hemicrania Continua, Chronic Migraine, IBS, Allergic Rhinitis and Heart Murmur
Meds: Imigran Injections, High Flow Oxygen, Mebeverine, Lansoprazole, Nasonex and Clarityn