PsySara, that sounds like a good opportunity to have a weekend to yourself. That'll be a strange feeling!
When you do fall in love with a new guy in the future (I feel sure you will), you'll really really appreciate him. Maybe one of those guys at work is divorced? Not that you'd want to jump into a new relationship any time soon, but you could branch out a bit by socializing more and seeking support from a wide range of friends and colleagues, both male and female, and especially those who are divorced and know what you're going through.
My husband keeps saying "all the physicians at work are divorced...." As if it's so normal and common. If that's the case then it sounds like you'll have plenty of options.
I hope your kids are feeling ok. They have each other which is great. Hopefully your husband will find some motivation to work things out with you enough to give them a sense of security feeling both parents are on their side.
I hope this phase will pass quickly and you'll feel some sense of normalcy again. There's not really anything anyone can say at this time to fix how you're feeling but let's hope you'll pick up a few grains of wisdom and receive a few kind words from someone who cares about you as each day that passes. Maybe that's the best we can expect right now.