So my sister found out while she was pregnant that she has HPV. And she was given some medication during her pregnancy, but she’s not sure if it was for hpv or something else. The doctor told her it was for an infection? Well anyway, she recently developed a huge blister (like the kind you get on your mouth) but on her vaginal area. She’s going to make a doctors appt, but could that blister be a result of HPV or something else? She was checked for STIs during pregnancy and they never said she had anything. We’re just confused.