Sorry to hear!
Even though i only put a winter into a similar type business, i know exactly what you're feeling! Even when you do get to make it home for the weekend, even if its dead-heading (which seemed the norm for me), there is only so much you can do with your time until its time to go back out. Your mind being in road mode makes it hard to relax and enjoy your time off.
Hopefully you can do just as good putting in a regular work week and that you'll be able to be home every night to have time to do what you want to do.
Also hope those diabetes are manageable! Did you have a hunch that something was up or did this strike you by surprise?!