I Took Morning After Pill The Day After Having Sex

i took morning after pill the day after having sex i started my period 5 days later but 2 weeks earlier then normal it was very light with tiny clots but its been 12 days and counting that I've been on my period, i have light cramps lower back pain but 5 days into my period it was very light and we had sex and he came inside me and the same thing happnd very next day i didn't take anything, could i be pregnant as i am still bleeding?