hello , i am 16 years old. i had for the first time unprotected sex for about 15 seconds two weeks ago, and now i have a sore, itchy painful vagina . it hurts when i go to the toilet and, when i decided to have a look it looked more redder than normal and even though it was sore to touch i looked inside the vagina were i saw a few white spots. i took a cotton bud and took one out and there was no odour with it. i don t know if it is a sti or not as i since christmas i have been on and off alot of different antibiotics due to tonsilitus and didnt know if it could be a yeats infection . thank you for your time