Pregnant after morning after pill

So I remember I took the morning after pill dec 24 got my period Jan 9 and I got pregnant 15/ found out I was 5-6 week on February 11 th . Do you think the morning after pill caused me to ovulate during my period or something ? 
I lost my baby due to a genetic disorder called skeletal dysplasia but we're trying again and I don't think I'm pregnant this month period is due today and since I'm having cramps I think it's coming soon .