Hi I had sex with my girlfriend one day

Patient: Hi .. I had sex with my girlfriend one day after her period got over. I didn’t ejaculate in her but there was penetration. She wanted to be sure and took an I-pill (contraceptive pill) that following night. About one week later she noticed a small light brown stain in her knickers .. I just wanted to know whether its the pill that caused it or is there something else or she may be pregnant .. I’m scared ..

Doctor: