Please help. Mother in law wants me to misscarry.

A few months ago mil says that when the baby is born she will call child protection to take my baby away from me. We got past it and I moved in a month or so later. Well it gets brought up again and now she's denying she ever said it, but says if i wanna go that route she will do it and win the case. Then she gets angry with my reaction bring that's silly and ridiculous because I know that would never happen... So she then threatens to physically harm me and says I hope your baby dies in your stomach. Father in law wants a talk with me boyfriend sister in law and mother in law to hash things out but I honestly think it's time I separate myself?