My balls have been tingling for 2days after having a one nite stand, my penis did not entre her fanny or bum only month, is it an sti what do i do now?

Not diagnostic: The only way you'll know if you have an STD or not to by getting to a doctor and getting things cultured and checked out. Tingling in the scrotal region following fellatio is not a common symptom of an STD but if you are concerned about the person you were with it's still worth checking out. I'm assuming "month" is supposed to typed "moUth?"