Trouble sleeping

My husband is out of the country for a few weeks and I'm finding it so hard to sleep without him. My sleep has been so broken with me waking up every hour or so. I have work almost every day so i need my sleep but even after a big workout or run i still can't sleep well. He wont be back for another 17 days and I'm feeling so run down already, i just don't know what to do till he gets back as i sleep so well with him there but too hard without him