I dont know how to deal with my ex?

You need to put down your foot to this guy, and have some backbone! You could try to rebuild some relationship with him, that is if it doesn't make you that unhappy. He needs to get a job to help support your daughter, or your going to have to go to court to get some child support from him. Either way, you need to remember that you need help- and he's not doing anything. If he wasn't going to help you raise this child I don't know if I would've had the child if I didn't have anyone to help me.