I Have Thick Clumpy Reddish Pink Discharge. It Smells A

I have thick clumpy reddish pink discharge. It smells a little like blood, I'm itching or burning down there. I often get bacterial vagitosis (i think thats how you spell it) but its never this color. I've had sex 3 days ago and 2 weeks before that unprotected with the same partner. I'm on the pill. This is the first time I've ever had it my period is due in two days. I just want to know what it is so I can stop panicking.