Depressed about husbands deployment...?

My husband is due to deploy in 6 weeks. Although it is only for four months(as opposed to these 1 year deployments) and it is in a safe place (of which I am thankful) I'm only getting upset because I gave birth 8 weeks ago, I have a two year old, and I am scheduled to have surgery (gallbladder) in about 3 weeks. It seems like the worst time ever. I have no family near and I don't know anyone at all. I'm a stay at home mom so I get bored enough when he is just at work..but for four months..I'm not sure how I'm going to do it. We have been arguing non stop about this deployment. And now I feel so horrible about all the fighting because he is about to leave anyways. He is leaving with us not at our best with each other. He keeps telling me to "suck it up, it could be worse" but I think he is being a little insensitive. I know deep down I can do this, it's hard. It just depresses me to think about him leaving again. I'm not sure how to even p four months by. ~I need some uplifting!~