What Could Be The Reason For Pain In Vagina, Spotting With Light Blood After Having Intercourse?

hi,
I had sex five days ago and the day after intercourse my vagina was swollen, bruised, and felt like it was burning. The next few days I started having a very heavy dark yellow discharge coming out and so i've been wearing pads. I thought that maybe I had a infection because I've gotten them before, however, it turns out my boyfriend has a virus. I don't know if he gave it to me or if this is unrelated. But anyway yesterday i started seeing blood in my urine and thought maybe i had a cut on the outside of my vagina, but because of the discharge i decided to use a tampon to absorb the discharge. Instead when i pulled the tampon out there wasblood just on the tip of the tampon.afterwards i had a pain in my vagina and it hurt to urinate and there was a steam of blood. Now there's lots of spotting. I thought that it could just be my period starting, but it seems too early and the blood is very thin and clearish.