Been a week since my second Moderna. I woke up last Friday with a thumping headache. Monday I went to the chiropractor for a neck adjustment because my head was still pounding. He said my neck was really out of alignment so that was the cause of my headache. Never went away. Went back again on Tuesday for another. He said my neck wasn't bad and was kinda surprised my head hurt so much. Finally, yesterday, the headache diminished. The first day in a week I wasn't popping pain killers like candy. Today is good thus far. Is my headache vaccine related? Bad coincidence? The weather? I have no idea but it all started about the same time. Having said that, if this means I won't get COVID that is ok by me.