I'm freaking out. Please answer. ?

Today me and my girlfriend had . She's not on birthcontrol but I used a condom. The condom didn't break but the idea of slippage worries both of us. It never slipped off but the condom stretched, abd I never came but right when we finished and I took it off, I noticed white fluid inside the base of the condom. I'm scared the stretching caused this and were worried about pregnancy now. Please help:(