My partner is so immature!

JJ
He is buying nothing for the baby! Me and my family have brough nearly everything and he still expects my mum to buy us a 4d scan.
He expect me to clean our room or we live in a pig stye!
His family have brough nothing at all but are happy to show me expensive things that me and my family should buy!
Someone give me advice! 
I don't rely on my family by the way just my mum is being pretty generous and I haven't asked her for anything but I am greatful!
Just him and his family expect me to pay and my family to pay for everything out of the little money we have!