freaking outttt😔

I just took the emergency contraceptive (morning after pill), the two pills you take at the same time like maybe 7-8 hours ago cause I had unprotected sex the day before but he didnt come at all inside (took it just in case) and now my tummy hurts a little and im not sure if i'm feeling a little nauseous or if it's just cause I ate a lot from dinner..is it normal to have ur tummy hurt a bit hours after taking the pills? cause the pharmacist told me the side effects may appear about 2 hours after taking em so Idk if i should worry?