Alcohol induced Headache

Hello

For the past 10 years or so I have gotten episodic cluster headaches, about one cluster per year (I'm 38 years old).
Each cluster lasting ~1 month, headaches occurring 1-2x daily on average. My last cluster was about 4 months ago. Also it always occurs over and around my left eye. During this time i try to drink less alcohol, as it does make it worse/more frequent.

A few weeks ago after having 2-3 drinks one night, a couple hours later I got a bad cluster-like headache on my right side. Never before that I can recall did I have this on the right side. It lasted unusually long, 3+ hours. The next night, same thing happened again (after 2 drinks).

I decided no to drink for a week - and I had no headaches. So i figured it was not a new cluster, as they would be more frequent if that was the case.

A week later I drank again (2 drinks), and boom it came again, also lasting many hours. I abstained again a week (no headache), and now yesterday I tried alcohol again (only 1 small drink). Yet again, I got a migraine like headache on my right side 2 hours after that 1 drink. It gave me stops and starts and a constant dull pain and didn't fully go away until about 15 hours after starting.

So my question for everyone - any thoughts? It's almost like i've become "allergic" to alcohol over the past 3+ weeks, and everytime I have even a single drink it's triggering cluster like migraines, which last anywhere from 3-12+ hours with moderate intensity.
I've been a moderate drinker (1-2 daily) for about 15 years and never had this kind of consistent trigger before, only had anything remotely similar when I knew I was in a known cluster headache period, which I definitely am not in now.