Coming out as being pregnant

So I live with a bunch of jehovah witnesses and they are also family but I'm not like them. Even though they are my family I pay rent about $500 a month and child care $500 a month cause my aunt watches my daughter while I work and go to school. My aunt told me if I ever got pregnant she will kick me out. Is that against the law or something? I'm already looking for a new house and I'm worried that the fact she will kick me out just because I'm pregnant.