Is she pregnant or not?

Patient: I was in bed with my girl and i happen to put my thing in to her vagina but jus a lil not the whole thing and my thing was wet. Since i felt scared i gave her prostino pills on the 3rd day. A couple of days later we had protected sex she was a virgin but she didn’t bleed. 2days later she did bleed continuously for 3days and now its been almost 2 weeks. Shes having stomach pains time to time. Why is that? Could she be pregnant but it was protected sex?