Hi, I had protected sex on the 13th of June and when he pulled out the condom when on the bed containing sperm which was close to me ... 3 days after I had a yeast infection and started to stress about hiv... I then had a brown vaginal discharge... My lower front teeth started hurting along with my upper back so I started stressing even more.. I did a rapid blood HIV test 5 weeks and 3 days after which was negative. How accurate is it?? Cause I'm still having upper back pain which moved from the middle of my back to the left side of my back and now to the right side. Please help, is it aniexty ??