First time taking plan B. Panicking!

My boyfriend and i had sex for the first time on Jan 7th. He came in the condom. We continued then minutes later he came again and when pulling out the condom came off inside of me and for the second ejaculation, he came on the side of my thigh and vagina. I immediately washed myself and couldnt tell whos cum was whose. I checked the condom and it had no holes in it. After an hour i took Plan B and I've been having a clear white discharge. Is this normal?! Will plan B work?! I'm so nervous!  
Also my period ended on the same day in the morning before everything had happened