Hi, I am a retired pilot with a special interest in classical migraine. Although what you have comes under a different category of headache, I wonder if there is any physiological similarity in the initial stages.
Probably the best goal would be to try to free yourself from these attacks. Easier said than done.
Your problem has started a little earlier than average, would you like to say a bit more about the history and severity. Clearly, if you were one of the unfortunate people that suffered severe cluster headaches, being flight crew would be utterly inappropriate.
Does your problem worsen if you have disrupted sleep patterns? [ Aircrew of course have these all the time. ] If so, have you taken any sleeping tablets to get you through the night...and if so, what type and did they help? Have you taken any drugs, specifically designed to alleviate your problem?