So I had sex New Years Eve 3 times unprotected. He came inside me all 3 times. Im on birth control but I dont take them like I should and I know that increases your chances. I took my pills after we has sex and this week I am on my last week of pills which is usually when my period comes. Its designed to come that way. Well I am down to 1 pill on the last week and my period hasnt come but I am cramping like it is supposed to be here but it just didnt start. So its been 2 weeks since we had sex. Could I be pregnant?