Hi from NC. You have some competition in the UFO department.
By all means you need help and some stress relief. Check with your local department of aging or some equivilent service in your town/city/county. There is also an area agency on aging in every area of the country. Look for them in phone book and they can steer you to the kind of services available like day care, home health, and an amazing array of services for folks in your and your mother's shoes. Just one day a week off can make a big difference in your stress level and your ability to do right by your Mom. I give this advice after serving six years on the board of the county dept. on aging in my poor, rural county. I'm now in my second term on the advisory board of the area agency which covers seven poor rural counties. That group is federally funded in part and exists across the country.