Ok so I had sex with my girlfriend for the first time two days ago. We messed around and I put the tip of my penis in her vagina, then I stopped put a condom on, and did the whole regular routine. After I was done I tossed the condom, waited for about 10 min or longer to have round 2, I didn't have a condom so I put my penis in her like for 5 seconds and then stopped because I didn't want to cum in her and I realized I was being stupid for not using a condom. She was on top when it happened. My main concern is that during that 10 minute wait of not doing anything, with the left over cum from the first condom on penis and then putting my tip in her is how high are the chances that she is pregnant.