Hi! My husband got the Moderna vaccine and the day of his first shot a new cycle started, just 20 days after a previous 1-month cycle ended, but on the other side.
we of course don’t know if this is because of the vaccine or just a coincidence — previous to these two cycles this year, he had been CH free for 2 1/2 years...
the day of the second dose of Moderna was insane... 5 hours after the shot he had a 3-hour attack that was not aborted with a sumatriptan shot and had him yelling and rocking back and forth non stop — it was super scary.