Hi Doctor My Girlfriend Period Started On 3rd August And

Hi doctor my girlfriend period started on 3rd august and we had unprotected sex on 17th august and she had unwanted 72 under 12 hours, what is the expected day of her next period? Is it usually important to bleed in 5 or 7 days after taking unwanted 72 tablet... What is the chances of pragnency and when we can use hcg test kit... ???