moving out

Me and my daughtersdad broke up2weeksbefore she was born we shared apartment together and I still have to get the rest of my belongings and my baby's out his house but everytime I try to get them he tells me he will give me the stuff when he's good and ready I just don't get why he won't just give me my stuff if he's in a new relationship already I just wanna move on with my life and start fresh I honestly dunno what to do