“Thunderclap” Migraines

I recently started getting thunderclap migraines, only on the right side of my head. I’ve felt it on my left side once, but right side has been consistent for the last 5 days. I went to the ER yesterday… CT (no dye) came back normal and same with blood work. I’m used to migraines but new to this “electric shock” feeling in my head. Today is the 6th day I’m dealing with them.

I have discrepancies to my C3 and T6-T7 if that possibly correlates. Any suggestions?