I'm brand new to this forum so I apologize for not knowing more about you - I just read your post and all the replies you've been given so far, then went back and re-read your original post. One of the first things you said was that you and your husband were having major differences and you were wondering if it wasn't time to just leave the whole thing behind. I have to say that if you are really miserable and there is no possible way to reconcile those differences, finances and housing and all those worries are really secondary and can be worked out. If you need to leave the marriage, leave. BUT...
is there a chance this can be worked out? I'm assuming it isn't just that he's gone to the lake without inviting or calling you, but that that is really like the straw that broke the camel's back. I'm thinking that there has probably been a series of things like this that just keep building on one another and I can only imagine how unhappy you must be feeling. Have you tried communicating to him how much it hurts that he didn't/doesn't invite you to do things? Or how important it is to you that he call you when he's away? Sometimes men are just so clueless - you practically have to spell it out for them! (sorry guys, no offense intended.) You could say something like, "I don't want to have an argument, but I do want you to know how I'm feeling. It really feels like you don't care about me when you plan family trips without including me - it feels like you don't want me to be part of the family. I understand that I may not be able to do all the same things you guys are doing, but I would still like to be there and share the days with you. I also understand if you need some alone time with the kids. Even when you're away though, I think it's important for us to be in contact. A quick phone call to let me know you made it to the lake safely or that you're thinking of me, would really make all the difference." (of course, only say that if it's actually how you feel, hehe. That's just an example.)
I don't know Kelli, maybe I'm way off base here. I'm sure many people on this forum can give you advice about how to survive after divorce and like I said, if you really are miserable and see no other way to rebuild your happiness, you should leave. Life's too short to waste time being unhappy. But you married this man for a reason. You did love each other once (and maybe still do). If there's anyway to rebuild your relationship and happiness as a couple (have you thought of couple's therapy?), I think it's worth a shot. That's a big IF though, that only you can answer.
I hope I haven't overstepped the boundaries here - I really just wanted to help you think about the relationship issue in and of itself because that's really what's causing you so much anxiety (I think). If you want to talk more, please feel free to PM me. Good luck. I know you'll be able to find your happiness again, I hope you are able to do it sooner rather than later.<img src="i/expressions/heart.gif" border="0">