Hi!
Congrats on your baby! What an exciting journey!

I know it's difficult to live with a mom who has BPD. It can be really hurtful and frustrating. I think sometimes it would be easier to just cut off all contact. For me that's is hard to do because I still want to see my dad and sibs. To do that, I have to have some incidental contact.
I worry about being a good mom, too. I know I don't want to pass on dysfunction to my son. I want him to be happy and healthy in all ways. I don't want him to have to deal with all I have dealt with. I don't have any answers yet, but I'm glad you're here. I think participating on this board shows that you are committed to being a great mom. That is admirable.
All the best,
Lucky