Everyone I know that had Covid and then got a vaccine, got walloped on the first shot of Pfizer and Moderna or the only J&J. If you didn't have it, you got walloped on the 2nd Pfizer or Moderna shot (myself included.) Mrs. Socks got the J&J and never felt a thing, but she never had Covid.
As others have said, it sounds like you have antibodies out kicking butt. You will feel better tomorrow.
In similar news, I have a freakin head cold of some sort. Kids brought it home I guess. I had to go get a Covid test before the 17ing doctor will get me any meds. I get the results tomorrow, but its not Covid, all sinus crap. It's going to be a crappy fall if every time we get a cold or flu we have to wait days to rule out Covid before we can get treatment. This **** will never end.