This morning when I woke up I notice that my vaginal area was sore just on one side though. There are no bumps or visible signs of infection. It's just a little puffy and hurts when I sit down. Yesterday my underwear was riding up and I was outside in hot muggy weather. It still hurts, is this something to be worried about? Also I haven't had any type of sex in over a month so I don't believe it could be that.