Hi, I am having my periods and along with that I noticed some discomfort on my labia-majora, the external vulva region. There is something like a red boil. It has swollen and increased in size approx 1cm wide. It has not yet popped. Anything I apply doesn't stay as I am using sanitary pads. Any help would be appreciated. I am not able to walk properly and even pad touching the surface causes discomfort.