hello;
I'm very worried. I have been with a guy for 3 years now and I love him. it may sound silly since i am only 16 years old. I have always been with him having protected and unprotected sex. my Patents know about it. i have a very tight relationship with them however my mate had an 18th party recently. it was all fun till it became over crowd of people. i had a bit too much to drink :S, and had unprotected sex with a mate of mine. he is a bit of a player ~ 7 different partners. he has never be known to have a STI however i don't think he has been tested. I have been diagnosed with Chronic Urticaria, Angioedema and dermographism. I'm so scared i need help a few days after having sex that night i noticed urinating was a bit sore, also when i touched my vagina. it has been about 8 days after that night now and the burning when I'm urinating is dying down but still there however there are little red itchy bumps on the out side of my vagina (out side of wings) however it is really sore and irritated.

how serious is this?
what could it be?
do i NEED to see a doctor?