What do I do?

So, I'm gonna try to keep this short. My boyfriend and I have been dating for 10 months, we're doing long distance because he's a marine and i'm in college. He's currently away right now for a training exercise held by NATO. He's gone for a short amount of time, but he and I have been under a lot of stress from his work schedule and it being my senior year; our relationship is starting to feel that. Last week, we got in to a petty fight...we weren't being considerate of each others feelings. He asked for space and I haven't heard from him since. I've reached out twice but I've learned it's not worth it and I just need to let him decompress on his own. It's killing me not talking to him, he should be heading home soon but I don't know where we stand and it scares me. There could be a million things going on right now and I understand that, but I'm getting worried that I'm never going to get a text explaining what's going on. I don't know if he wants to break up or he just can't think about us right now. I would think that if he wanted to break up he would have by now... I just wish he would just give me something to go off of. I'm trying to handle this maturely as possible but it's getting harder on me not to think he's gone for good. What do I do, wait it out? I just want my guy back....