Sleep...or lack of. :/

I've been having major issues falling asleep at night. :/ My SO gets of work around 4am and lately I've still been awake when he comes home. I'm exhausted, but sleep just isn't happening. When i finally do fall asleep, i end up being woken up by SO because I've been beating the crap out of him in my sleep. It's to the point where I've had to start sleeping on the couch because I'm just not okay any where else. I'm constantly grouchy and easily irritated. He doesn't even have to do anything and I'm pissed. But at the same time that I'm giving him the silent treatment, I'm cuddling up to him because i know I'm being irrational. :( i feel completely awful. :'(