My anecdata, I got the J&J shot the Monday before it was cancelled. Went to sleep shivering that night. Felt better the next day, then terrible the day after th

My anecdata, I got the J&J shot the Monday before it was cancelled. Went to sleep shivering that night. Felt better the next day, then terrible the day after that, then had an earth shattering headache like a bomb went off in my head the next day after that. Went to the ER at my wife’s insistence that they did a CT scan with the dye and all that. Said everything looks fine. I wasn’t having headaches before this but who knows maybe it’s just a coincidence. Sure seems like I’m getting a lot more headaches in the last couple weeks though.