Condom Popped! Is it okay?

Alyssa
I was having sex with my boyfriend on the first day of me not being fertile anymore. He didn't come yet, but the condom popped inside me. Once we heard it, we immediately separated. When that happens, I immediately think that the cracken have been released and I'm doomed because I'm not on the pill. I wanted to know the likelihood of me actually getting pregnant. 
(I took a Take Action about 50 hours after the incident, so I'm hoping I'm fine)