If they do not let you return to work on Monday, keep you off for another week, say, then you should file for unemployment benefits as soon as that first week with no work has gone by. That may inspire them to get you back on board, or at least get you an answer quicker to when you can come back.
If you are ready to come back, released by your doctor, and the company does not have work for you to do when you're ready to come back, says you need to wait any length of time before they can let you come back, then you are out of work through no fault of your own. File the claim, and they'll be contacted and asked why you are off work. If they want to, of course, they can keep dragging their feet, they have that option, but at least you'll have unemployment benefits to live on while looking for something else.
If you have to move back to your home state, you'll be able to transfer the claim. Even if you haven't worked there or on that job too long, you'll tell the claims system and they'll be able to pull in wages from all the places you've worked in the base period and will determine which state you may have a claim in and how you'll go about the filing for it.

