Depression, pregnancy, & a mom overstepping

I admitted to my mother about being depressed an having severe anxiety with this pregnancy an that my midwife was referring me to see someone just to make sure I an the baby would be okay. The entire time I was talking to my mom about this I felt her only concern was taking my son. She kept saying let me take him for the weekend or longer. Idk if she's trying to help or if she is actually trying to take my son. Now I don't know if I trust her to have him... Can she try an permanently take my son because I'm suffering from depression an anxiety? I take care o him. He's happy an healthy an very loved by his father an I. This is stressing me out so much. My brothers gf is suffering from post partum depression after having her daughter an my mom told me that she an my brother are gonna take her to court for custody because the baby isn't safe with the mom (mom also refuses to get help) but with knowing this I do feel shed take my son. She's always complaining either doesn't see him enough (we live 2&1/2hours away). I may be over reacting but I feel very uneasy with letting my son go over there without me. She also made comments that if I keep feeling this way that I'm not gonna love the new baby an it's going to cause problems with Tre an my husband. I never said I didn't love this baby I just said I'm having a hard time having that big connection like I did with my son. I'm 15 weeks. I don't feel pregnant like I did with my son. My husband thinks once I feel the baby an find out what it is that the connection will be there. My mom just thinks I'm a terrible mom for feeling this way an that for some reason it's going to affect my son. This is why I never trust people, they use my weaknesses to hurt me. Even my own family does this