Okay so I’m on birth control. Been on it for at least 9 months. Always taken the pill on time , never missed one. So it’s highly unlikely I’d be pregnant. Lately I’ve been noticing weird discharge . It’ll be light green or light yellow or white. No itChing but a weird smell. I start my period next Wednesday. Could it be a bv or yeast or just discharge before my period. Last time I had unprotected sex was like 3 weeks ago. He didn’t even finish tho. And again, never missed a pill. Help. Also there is like a weird cyst like pimple on my vag. But I’ve had that for a while .