What Causes Vaginal Swelling And Soreness?

Ok i had sex with two guys recently now i dont think this has anything to do with it as well the thing is both of them have been tested for stds recently and were clean, so am i.
My virgina has been itchy and a bit swollen and sore recently.
I cut myself down there and put moisturizer on it but have found a cream that stops the itch.
Its been a week, i took the thrush pill and it seems to have calmed down the itching dramatically however its now a bit sore and when i pee hard to wipe myself.
Help!