Advice/ 7 weeks postpartum

Im living with mom currently im 7 weeks postpartum and lately ive been feeling depressed and every night mom is always screaming from the other room as soon as my baby starts crying she yells "why is he crying".? Or makes comments about him being constipated like " if you kept breastfeeding him he wouldnt have this problem"! Etc things like that and I just feel pissy and I dont want to be around her anymore males me feel like im a bad mother, or like im going to hurt my baby or I dont know how to care for him, and I want to cry. Am I being overly sensitive about this.?

*husband is a truck driver and hardly home😞