Sounds like you got the college freshman syndrome. You are finally out from under the thumb & can do whatever the ____ you want so you're gonna. Go ahead & get it out of your system, but tread lightly. Keep in mind, when he gets home he is going to be dry as a bone & will need you to be that way too. This might lead to more resentment if you go creating a new lifestyle for yourself that you then have to give up when he gets home. Don't feel guilty now for going out with friends for support & to keep you in good spirits while you are going thru this. A word of warning though, he probably will not understand this beause to him you probably are supposed to be home miserable without him.
When my wife went into the hospital the first time, I was working midnights & had no one to watch our son overnight. I had to take vacation days from work, so after I took him to school, I had the whole day to myself. I did a lot of stuff around the house that I hadn't had time to do before to keep busy. When she got home she put it together in her mind that I didn't even miss her at all because I did all this stuff instead of moping around. Not saying your hubby would be like that, but you never know, the similarities with this condition run pretty deep sometimes. If it comes up, you just went out with friends for some cheering up.