Other child's behavior.

So I have been TTC and my boyfriend's cousin's son has recently been very distant and mean to me. Before this last month he wasn't, he loved me! Even if I just look at him he yells no! Sometimes more than once. Mind you, he's 2. He's tried pushing me. A family member of his taught him the b-word a while back and he'll call me that every once in a while, pointing at me and everything.

Is there a chance that I could be pregnant and that's the reason he's been acting this way towards me now?