Can someone please help me ! *No one ever answers *

I'm 18, and I'm scared out of my life. Me and my BF had sex the condom broke. 3 hrs later I took Plan B. I used spermicide But idk if I used enough and I also use the Today Sponge but it had flipped so idk. Earlier I went to the Bathroom and I wiped and there was a little blood. Now there is nothing. Please help. I'm so scared. My period isn't due for another 4 days. I read plan B isn't always effective.