I'm so overwhelmed

Mskrystinnnn

So I'm 18 and I have an 8 month old daughter.

my ex is pretty much worthless, we're still going to court for child support but he might buy her some diapers every once in a while.

I've worked and paid for everything she has and needs.

He also has an older child by another woman who cant seem to accept the fact that my daughter is his too.

he's a womanizer, selfish, and he lives in the basement of his grandmothers house 

 I really want to get full custody of my daughter and just forget those 2 for good. 

he signed the affidavit (birth certificate)

and is really intimaditing when it comes to court

i dont have to money to go to court yet

i really dont want to ever let my daughter stay with him unsupervised or overnight EVER.  

any advice?