I got my regular period two days ago today I was laying in bed with my bf and I felt itchy so I went to the bathroom and checked things out and one of my outer vaginal lips was red, puffy, and irritating.it hurts when I put my pad and panties on I am using at type of pads I've never used so i don't know if there is something in them that my body doesn't like or what but I'm panicking please help. (I am sexually active but me and my bf are both std free)