Ipill and similar contaceptives are to be taken maximum within 72hours or having unprotected/accidental sex.
So if it has been more than 3 days then my suggestion would be to wait upto normal date of mentrual cycle. If it doesn't occur then urine
pregnancy test is to be performed with kits available in the market.
If it turns out to be positive and you don't wish to continue with the pregnancy then there are medicine which can terminate pregnancy.
Next Steps
Urine
pregnancy test of normal period is skipped