It turned out to be a yeast infection. I am on diflucan and gradually getting better. Yuck!
Its probably just soreness after doing it for so long.
A lor of the time oral STDs do not produce any symptoms, especially the day after.
See how it feels in a week.
If it is still the same, check in with your GP.
Oral STD often do not show symptoms and when they do it is never the day after. Doing it for 45 mins...I would assume would make your mouth and jaw sore. I know when my wife does it for just like 10 mins her jaw gets sore.
If it is not an STD I am not worried but doesn't it seem odd that it started the day after I performed oral sex? BTW I did it for like 45 minutes. Can I just be sore in general?
See a GP, this has nothing to do with a STD.