Hi,pls I Want To Ask Can Someone Get Pregnant After

Hi,pls I want to ask can someone get pregnant after taken postino 2 with in 24 hrs..my period stoped on 28th August and i had unprotected sex on 30 August..although I started bleeding after one week of taken the drug but it have passed one month and hv not see my period.. does it means that am pregnant or how long will it takes for me to see my period.