BF mom wants me to get an abortion.

I'm 15 weeks pregnant and BF just told his mom. He was scared to tell her. When he told her she was very devastated and told him that we should get an abortion. She said that it's an embarrassment to the family because we are not married and I have 2 kids from a previous Marriage. He said it was not an option. I haven't meet his parents and don't think i want to. We are in our mid 30s good jobs have my own place. BF is kinda upset that I don't want to meet his mom.