Could i be pregnant

Hello... am inquiring.  Around January 5th i had a none penetrative sex and i took an emergency pill the following day though it was within 24hour.... then i received my period on 22nd that very months which were heavy in the first two days and lasted for 5days. My next cycle kinda delayed and went in my menses on 26th February.. which were not heavy as compared to the last month... please help me could it be pregnancy though i have no signs and symptoms of pregnancy.  Thank you