My girlfriend is using a monthly medroxyprogesterone injection for contraception. She has finished today the second month. Two days ago we had sex using a condom, but after ejaculating we continued intercourse for about less than 2 minutes with the same condom. We stopped and saw that the sperm was at the bottom (still inside the condom), the condom was tight around the base but some sperm might have gotten out. She was at the end of her period (it ended today). We were nervous so she took a plan B pill (Levonorgestrel) two days later (around 50 hours after the intercourse), and the second plan B pill 12 hours after that. She won't take this month injection of medroxyprogesterone. Is she at a high or moderate risk of getting pregnant?