WELL I HAVE MY APPOINTMENT NEXT TUESDAY I WILL BE ASKING QUESTIONS FOR SURE
See a doctor. I would imagine though if you've had an STD in the past though you wouldn't engage in more unprotected sexual acts. It could be another infection, it could be a transmitted disease, it could be nothing.
the thing is i dont have anal sex
i'm not a doctor, but it could just be irritation. if you had sex anally and then vaginally then you may have an infection caused by the bacteria in the anus. the best thing to do is get tested though