Mental abuse?

So I need to get this off my chest and see what others think about it. I am secretly dating my sister's best friend. He and I have been dating for almost 3 months. One problem he lives in the same house with me and my family. Literally no one thinks anything is going on because we hated each other at one point. We ended up falling for each other. Well what I'm trying to say is. I fear that I may be pregnant. I am waiting for my period to start because it hasn't started this month. I took 2 pregnancy tests and they are negative but my period won t start. I brought it up to him and he automatically told me that we can't have a child and that if I'm pregnant we have to get rid of "it." I never thought he would say that. He told me to get an abortion. I feel he is being heartless. idk what to think.