As the others are offering good physical advice, I will offer this piece:
This may be completely normal. You are under a lot of stress, with your husband, kids, job, money, health concerns, etc. You may be slightly depressed and it is natural and good that the body seeks to sleep more and rest when you are depressed. I think it is a modern construct that we expect to feel happy/good/up all the time, or maybe that OTHERS expect us to be.
Yes, get enough exercise into your life so that you can honestly say you are not spending all your leisure time on the sofa in your pajamas. But I'm talking maybe 30 minutes per day. Otherwise, rest. Sleep. Do things that are fun for you, even if that is sitting on the sofa watching tv. Give it at least the three weeks that you were giving LCHF, now that you are adjusted to that.
If your husband mentions that you are crabby, tell him there are good reasons for it, and he'll just have to help make your LIFE easier, and not worry so much about the food. It MAY be the food, but I would not jump to that as the first reason. After all, look at what you have going on. Plenty of reasons there for stress or depression. Or plain old crabbiness.
And keep remembering how well the diet is helping you with your binges. That is worth a lot!