Hello, after having unprotected sex (Friday night) I took the Postinor 2 pill the next day (the pharmacies were closed) and by Sunday morning I noticed my soreness and slight itching was unbearable and it felt like a burning sensation mainly on my labia. It also burned when I urinated after I irritated it by scratching and a feminine wash made it burn more. I used 'Candid V gel' on Sunday night for three night and it reduced the symptoms. It is day 8 after using the gel and I feel better but there is a slight underlying itch inside my vagina that makes it feel like I am not 100% better. What could this problem be? I really hope it is a yeast infection. Please help.

Sounds more like UTI, but of course you realize it also could be an STD.

Time to be tested and see what type of infection it is

In any case, it would be prudent to get an exam and be sure.