I have a small abrasion on the outside of my inner labia it is swollen, painful when I pee, itches mildly. I used a mirror and I can see a white patch that is slightly raised where the skin is broken which I'm constantly checking. I finished my cycle a couple days ago can irritation from the pad be the cause? This problem has occurred before, I have little discharge, no odor and I'm on birth control. What is it? Will this go away? Is it a sign of infection? What is the best way to treat this? WORRIED!!!