I missed one pill a couple of days before my boyfriend ejaculated in me. Which was on January 2. And I've been having cramps on both my right and left side, I've also been feeling nausious and craving chocolate. Today it's January 22 and I'm on the sugar pills and should be starting my period. I'm having cramps like symptoms and i should be starting and haven't yet. Is it a possibility I'm pregnant or am I just tricking my body?