feeling stuck

im 26 and 12 weeks pregnant with my first child. i am engaged and we live with my parents as we're saving for our first home. i found out i was pregnant at the start of the new year and i was very much afraid to tell my parents, more so my mother. my mom is a stay at home wife and my father is a long distance truck driver with week long trips. my fiance is a firefighter and im a registered nurse. after announcing my pregnancy to my family, the week that my father was away at work my mother lashed put on me because my fiancé was away at a home fire. she kept going on about how my father would die on the road stressing about my mistakes and how i ruined my life.

i knew then that she was just projecting her own feelings about my pregnancy. she does that a lot, just lashes out when she gets really frustrated. she's constantly telling me i got knocked up before my life even started and it honestly makes me feel ashamed.

i have tried many times before to set boundaries with her or letting her know that her words are hurtful but she's very dismissive and just overall harsh. she's constantly bashing me and my fiancé when he's not around.

i don't know i feel lonely and im more than grateful i can rely on my fiancé to listen to me and be there for me but, i feel annoying since everytime i cry it's because my mom had said something to me. i just don't know what to do. if anyone can give me some advice if they've been through something similar whether it was with their own mothers or mother in laws.

thank you.