So confused or is it just tired

Well, we moved in with my brother's family last week. Actually one week ago today. I don't know how I feel about all of this. I am really starting to feel like I made a big mistake. :( I know Matt needed something drastic done, to wake him the hell up. We've been talking this week, about all kinds of different things. He is sitting in a basically empty house. He has a couch, entertainment center,and a coffee table. His brother gave him a tv & a fan. Oh, and 1 plate, 1 fork, and 1 frying pan. I've used so much money for gas, this last week, it isn't even funny. I just can't seem to stay away from the house. I "snuck" over there, while the 3 middle kids were with Anna, just so I could go talk to Matt. He is starting to realize how much I "didn't do" around the house. He knows what he did was stupid, and has said that he will start going to drug & alcohol classes again. I just want to take the kids back home again. I love my family & all that they have done for us, but I'm not happy here. I have to fight for 5 minutes to get on my nephew's computer ( I have mine here, but have to wait until my sil has time to see if she can get the wireless up and running), that I can't sit and rock my colicky baby at night, that even though I did most of the parenting at the house, I still could hand Matt the baby if I was super tired & needed a break- I am dead tired right now. :( I don't know how to fix this mess- I don't want to lose my family, if I decide to go back to him. But I don't want to give him up. I just want my house back. And family, as disfunctional as we were. I wish I had someone who could tell me exactly what I should do.