It sounds like you need some serious respite before you completely crash and burn. Can your husband and mom take over for a time and let you rest? When I'm feeling like that and I don't get a break, it usually ends badly. Is the lack of concentration possibly from depression? Do you think a medication adjustment (if you're on meds) might help? Do you have a PRN to help you through the anxiety? I hope your husband and mother can take some of this off your hands for a while. I know when I'm at the point where I'm completely burned out, it's either I take time to rest, or I end up really sick and in the hospital. At least if I'm able to rest, there's a better chance that I can at least help with meals or low-key things around the house, even if I can't be there for outside activities for a while.

I hope you are able to find some peace soon.