Im fourteen and have had sex several times with the same partner, who has never had sex with another partner either. There was only once we didn't use protection, several weeks ago, and I took a morning after pill; I have had my period since, so i'm not pregnant. So I just finished my period and for the first time no blood escaped and stained my undies, but now my vagina is really itchy and red, with a warm burning sensation (but not an incredibly intense burning, more like a 'humming'). It feels dry and sore. My clitoris is also itchy. I'm wondering if this could have to do with an infection or irritation because of the tampons and whether it will go away in a few days. I also wonder if herpes can be passed between two people who have only had each other as a partner.
I also got severe diarrhea last night, and couldn't run to the toilet before I soiled myself. It wasn't uncomfortable, just surprising and embarrassing. I've just given up chocolate and fizzy drink, so i've altered my diet massively as they were my primary sources of food.
Could the two be connected in any way?