I am 17 years old been going out with my boyfriend for while+brown stuff coming out my vagina and vagina sore itchy but i dont come period?

Infection: Its is possible that you have developed a vaginal infection. A visit with a gynecologist will be helpful.

Pregnant or yeast: If you have been having unprotected intercourse and you have missed your period, you need to do a pregnancy test. The discharge could be a number of things- a yeast infection, a bacterial infection or even a sign of a sexually transmitted infection. Please make an appointment with a provider as soon as possible, as the only way to accurately diagnose this is for someone to do a simple exam.