I have sex like once a week and i heard somewhere that you should always look at yourself so that way you know if anything changes. So i decided to look at myself and it was after i had sex and the whole outside area of my vagina was red, and it is irritating. Its been two days now and its still red, it calmed down a little but its still very red and it's very sensitive. Is this bad? Will this go away soon, or should i see a doctor?