Blood?!?

Katherine
So I just ended my period 9 days ago. 
I had no condom sex with my boyfriend 7 days ago but took the plan B pill right after. 
And i used my jackrabbit yesterday (which honestly i was too horny to clean yesterday)
And my lower area has been ichy for a few days
Thous are the facts.
So this morning I peed and when I wiped there was a blood. Each time i go pee today the is even more blood then the last time. I thought it might be a yest infection so i put Monistat cream on it this morning. 
What is this? Why is it going on? How do i stop it?!?