My heart breaks for you enduring this pain. Luckily, you have stumbled upon such a wonderful group of helpful and kind people. My spellls come in like a lion and out like a lion. At both ends I get a couple of days of the clusters hitting me sporadically and short spurts with these weird like electric voltage jabs every so often in my head. It is almost like it is planting itself from outer space or something. Then they are majorly debilitating for about ten weeks, waking me anywhere from 1-6 times in night, I call it a migraine hangover during day, though that is bad terminology. Usually the last one extends into the morning/day and then it takes off for who knows how long. Eight years last time, two years the past two cycles and prior to that I got them once to twice a year.
When I am in the spell and they hit me, I can also predict time and intensity. When they leave, they leave. No pain until morning when I feel hungover and pressure behind my eye that never quite develops.
The injections work for me, but you can only take so many. I have an oxygen prescription but can’t find anyone to fill it. Thankfully, I am on Day 10 pain free, thiugh I am not sure why yet. I am on steroids, verapamil, D3, and having phlebotomy where a pint of blood is taken twice a week for a different issue. I feel like they are gone, there is not an inkling of a cluster. When I have taken preventatives in the past during a spell I remember still getting them. We will see, I guess I could try a margarita but it is not worth it until I quit the meds. I am at 40 mg of prednisone and 240 mg of verapamil. However, they stopped with my first wrong mg pack of steroids, I think I was on less than 20 mg a day when they stopped.
Hope this was helpful and I pray You and everyone else gets relief soon!