Husband maybe leaving?

just need advice and to see if this has happened to anyone else. My husband and I got in a fight a few weeks ago and when we were drunk the other night he brought up how he's still not fully over it. So we talked about it and it seemed alright. My husband and I currently live 2 hours apart until we can find a home together. I was texting him yesterday around noon and asked if we're alright. He said yeah he's okay and asked if I was. I said yes. Then I stopped hearing from him. I haven't heard from him since then. But he's been posting on Facebook and stuff. This is so unlike him. He's never done this before. I'm so worried we aren't okay and he's going to leave me. I feel powerless because I can't contact him. What do I do? Do you guys think he's going to leave me? I'm so hurt and confused and I just want to know what's going on on.