okay im 18 years old and my junior year in high school i noticed that i've had a smell coming from my vagina that smelled like fart. i did have clymydia before but i took antibiotics to get rid of it. since then im still having sex sometimes unprotected sometimes protected. but now i have like a discharge that is light brown sometimes light pink that comes out and it has a odor but its not a fartish or fishy odor. do i have an std or yeast infection?