Good to hear but not good to see that you're not taking care of yourself.
Maybe you can treat yourself like you would a friend?
Your health comes first. Thats it. No if's, and's, or but's. If you don't have your health - you have nothing. You need to prioritze your life so that (within reason) your health is #1.
That means you eat healthy, drink water, do physical things only that you can easily handle, reduce stress, etc.
If you politely say no to visiting someone who needs your help, perhaps you can offer to pay a cleaning service - and not expect a word of thanks.
If you expect manners from a rude person - you are stressing yourself out. You need to stop stress - not add more.
If you decline a trip to Sante Fe, I think the sun will still rise tomorrow and if folks don't like that you are taking care of yourself, than nuts to them.
It is possible to say no to people who need you - and still be a caring person.
The doctor bills are there - that may be a fact. Stress and worry will do nothing to get them paid. Deep breath now. No one will come arrest you, you will be fine. And even if you are responsible for the outrageous bill (which I doubt) you can always work out a payment plan of a little a month.
But don't worry about it anymore. Give your worries to God. Or, what helps me sometimes, is to take a tiny step or some small action towards a task and then I feel better and I can worry less.
Stress reduces the "good" hormones in your body and increases the "bad" hormones. Your body is already fighting off bad stuff, you need to help it along you can.
No one will take care of you, but you. And who knows, if folks see that you do take it easy and take care of yourself - maybe they will starting treating you more gently.
PLEASE take care of yourself.
Peace and health and serenity to you.