Hello Doctor, I Had Unprotected Sex With My Gf When

Hello doctor, i had unprotected sex with my gf when she was on the 2nd day of periods. The periods discontinued after sex amd she stopped bleeding. She took an i pill after 30 hours and now after 3 days she vomited twice but the vomit seemed normal amd now while sleeping her body feels very heavy amd she feels drowsy. Please tell me what's happening.