Ooo i am so scarred help me please?

could i be pregnant. my last period day was February 17 and it was suppose to come march Monday the 16. and it is late ??? could i be pregnant i don't want to be. i mean i have a bf that love me so much we want it, but not anymore more because i have met someone new and i really like him better he can support me financially and my family like him better i didn't have with him so he cant be the father or i cant even tell him it is his. i need help......