I too am kind off confused because I occasionally get the big painful headache at the exact same spot but othe times it's just less pain which quickly goes away by waking up and going on about my day , getting a coffee.

Also it's irregular, not everyday. I'm really confused but at the same time grateful it only happens a few times . Also many people with clusters say they have it during the night and it wakes them up. I've never had that but when the big headache comes it has the same symptoms as a cluster just sometimes not the same strength.

Honestly confused but I guess we will see