I am a 29 yr old female. I've been in a monogamous relationship with my boyfriend for 9 yrs. I am on birth control so we have unprotected sex. Within the last week I've noticed soreness when I urinate and wipe, and sitting. I thought it would go away so kind of ignored it (the best I could). It's gotten more irritated and sore so I took a look with a mirror to see what is going on. I found a small red abrasion, about pea sized on the left labia, inside near the vaginal opening. It is red and irritated. For relief I've been using Neosporin. It seems to be helping a bit. Could this be a result of friction during sex, or should I be more concerned. Like I mentioned, I have had the same partner for 9 yrs, and I have reason to believe my boyfriend would not cheat on me. If its just a "rug burn" type sore how long till it heals and any suggestions on getting it to heal quicker?