I have this large pimple on my bikini line. It's the size of a fingernail, and this is the third time it has happened to me. It went away before my ob/gyn but it came back in the same place, always the same place. I have tried to squeeze it to see if any pus would come out but nothing, it just made it even more swollen.

Is it an ingrown hair? A very large pimple due to friction? I googled genital warts and it doesn't look anything like that, but the fact that this is the third time it's happen makes me very concerned.