Oh Angel, big hugs! You've got a lot going on right now, It's understandable your feeling like this. From what I've seen on here you are a very strong person and if anyone can get through all this its you! I know it's difficult but try not to let it all get to you, just concentrate on one thing at a time.
As you've said your the only one who understands your bank statements, I'm sure you've got it all right with the forms. Your wet room and lift will be done soon and your little one will be back with you again. It's so difficult being away from them isn't it, I bet as much as he's having fun with his grandparents he can't wait to get back to his mummy! And I'm sure you know deep down that no one can replace Mummy, we are special, it's our reward for all we do. Even though it might not always seem it we are our children's most special people. I'm sorry about the walking, at least you seen those special first steps and there will be so many more milestones to cherish. I bet he can't wait to get home and show off his walking to his Mummy! Can you speak your Husband about stuff, let him know how your feeling? It's tough sometimes when your OH works long hours or works away, especially with little ones too, finding time for each other is tough. My husband is out of the house 12 hours of the day and there are times I find it really tough, we do often disagree about it but for now it's just how it has to be, I know he does it for us.
Hope you feel better soon Angel, your strong, you can do this. X