I have a new sexual partner and this weekend we had marathon intercourse a few times that lasted over 3 hours at least i currently have a fever highest temp was 102 degrees and along with this is incredible inflammation and itching burning on my vulva i t

Worried: I'm worried that you've likely contacted an std. Sounds like it could be herpes, chlamydia or gonorrhea. You should definitely go to a doctor or urgent care as soon as possible with a fever that high. They may be able to diagnose you on sight, or they made need to take some tests. Regardless, most docs will start you on some antibiotics even before the results come back, just to be safe.

Maybe cystitis /UTI: You may have developed cystitis or a urinary tract infection. See your gyn md asap.