I don't know?

Hello everyone! Today I took a pregnancy test and found out that I am having a baby!! I told my siblings who were happy. My 4 year old acted like he was surprised/ shocked. My mom however looked me in the eyes and said "I fucking hate you! You're so stupid". Everyone keeps saying she will come around but I keep wanting to cry.. I'm excited...but I'm nervous.. my last pregnancy ended in a miscarriage. I get she doesn't like the guy I was dating but why hate me?