22 years old, engaged, pregnant and my mum hates me?

Your mother is out of line. Conceiving out of wedlock is a sin but the bible also teaches to repent for forgiveness. It also teaches that God is the only one who is allowed to pass judgement. The bible also says dislike the sin but love the sinner. The bible also says thou shalt not kill right in the ten commandments and your mother is praying for your baby to die. Women have babies out of wedlock all the time these days and you are in better standing in life than most so don't worry about the community. To deal with your mother use scripture to try to get through to her. You may also be able to find counseling at the church to help you two work things out. Just a disclaimer, I am not a religious woman myself but I know enough to help others because of friends and co-workers who are. I work with a man who is the preacher at his church. Best of luck to you and God bless.