Boyfriend

Me and my boyfriend are going to try to start a family soon and I am worried because my mum said because of my special needs she thinks I am not making good decisions just because I have had several relationships with men and had intimate relationship I thought I was pregnant a few times as well and they said if I do get pregnant she will get the baht taken away from me she has never liked the idea of me dating anyway can she do that can she actually get the baby taken off me if I get pregnant is she allowed to do this