I'm probably paranoid, but me and my GF had a nice time yesterday. We helped each other with hands and I finished (no penetration whatsoever). In about an half an hour we had second round. I couldn't get proper erection, we both helped with a hand. I put on a condom, we had sex and I did not finnish. Then, I finnished her with my hand. My concerne is that there might have been some residual semen left on my penis which could have got on the outside of the condom (when putting it on with my hands i helped myself with) or on my fingers I finished her with. What is the chance of her getting pregnant, considering she finished her period two days prior?