I say this with love but fuck both families and get your own small pathetic place that you can afford and don't live with EITHER of them. I think being young is going to be a problem for parents who haven't yet adjusted to having their kids grow up and it will be hard for them to see you guys as married and parents and not their kids. There is income based child care available try to access it. Finish all your school (any training or college, etc). You will be miserable living with his parents and it will burden yours and make things hard for him to commute to live with yours. You both need to be more spouses and parents and less kids before the little one gets here. Start saying now loud and often and stick with it. Practice if you have to.