I am not sure what this is called, last May 16 I got this little bump on the labium major part that looks like a mosquito bite or a blister and it's red. I didn't bother looking at it because this is not first time it happened. Now it's still there, I didn't have any physical contact with my boyfriend for a year now. It kind of hurts upon palpation or touch. Maybe I got it from shaving? I'm afraid to see a doctor.