Dear Twice Lucky,
Welcome to Beyond Blue and well done for reaching out.
I do believe that a lot of doctors are actually doing a lot more over-the-phone consultations so perhaps you could call your doctor's office and book in for a phone consultation, yeah? That way you can discuss what is happening for you, and still be safe in your home.
The other thing is that there are many apps and sites online that can teach you/help you with meditation and relaxation techniques. I'm sure a Google search would bring up plenty of options.
In the meantime, try to remind yourself to keep it simple; take each day as it comes, write a list of things to be grateful for. Write letters to your friends, family and Grandkids (if you have them). Do some gardening, or engage in a hobby. Ideal time in fact, to get really engrossed in a home-based hobby!
And remember, you are not alone in this. We are all struggling and it's okay to be scared and sad about it. but maybe set yourself a time-limit for actually being scared and sad. You could say to yourself something like this: "Righto, this next single hour is the time I am going to allow myself to feel all the sadness and fear and anger. But then once the hour is over, I'm going to turn on the music and get out in the garden (or whatever your hobby or interest is) and be grateful for this day in my home, with my food, clothing and shelter and my loving partner."
Anyway, I don't know if that helps, but I hope it does. Please do feel free to come back here as much as you like. Take care. I'll be thinking of you. xo