Hey doc, my girlfriend and I had indirect sex. I did not penetrate but there was a possibility of pre-cum in her vagina. So the following day, I gave her Nordette (Pfizer, all pills were white, 21). We had the "indirect" intercourse around 8 PM, then the next day she took the 4 Pills at 5 PM and 12 hours later she took 4 more pills as a second dosage at 5 AM. We are both worried that she might get pregnant. What are the possibilities?