Need to let everything out.

I was a troubled kid, molested by two people, being called a liar leading to self harming, running away from home, having a baby at 16, loosing my mom 3 month's later, choosing adoption, being in an abusive relationship. Doing drug's getting clean and finding the love of my life. Having a misscarriage, losing my mother in law, having another miscarriages 3 month's after losing my mother in law and then losing my father in law 3 month's after that. My step dad who raised me since I was 6 months old, remarried and his new wife has a daughter my age. He wants nothing to do with us now or my daughter. Doesnt care about my current pregnancy. He wont come visit even tho hes dropping his wife off to see her daughter not even 10 minutes from here. I am so broken and feel like he has broken my soul.. I haven't felt this sad in 15 year's.... I don't want to be depressed over someone who isnt worth it but it's my dad and he is all my baby girls have...

How do I stop caring?