Sorry you are feeling sad. I hate it when life seems to hit all at once. As if you were not stressed already now you have to figure out your finances. I get so stressed about money. You just have to be extra careful not to let your frustrations creep into your relationship with you husband. I did that when my husband and I first separated and it only drove us further apart. You have to learn to be cordial and get things sorted out.
I can know how hurtful it must be to see him walking around seemingly alright but you have to know that he isn't. These WAHs of ours seem like they have it all together but inside they are hurting. Yours may not admit to it now but give him time and he will. My husband has only recently started talking about how hard this is on him even though when we first split he acted like he was on cloud 9. Grr!
Keep venting here, it will help you not vent to him.