(hugs)
I can totally relate to this. I am overwhelmed so easily by things that other people seem to find normal. Dressing myself, getting somewhere etc... I mean I DO it but it is SO much work! If I go out one day, I need so much down time afterward. And the thoughts of what I need to do coming up (son's birthday party, the kids starting school) overwhelm me so much that literally I just stand still like a dear in the headlights and fall apart.
Just one day.. just one day at a time. Dont look at the week, just get through each moment.