You are in a tough place all around, you probably are exhausted, cranky, worried, stressed, and grieving while also thinking of your own mortality and where you are and where you would like to be---with all that is going on I am not surprised you don't feel well. I hope your doc. also did a good physical exam to rule out contributory medical issues. My heart goes out to you. What/who do you have for a support system? And what, if anything, are you taking a little time out of the day to do just for yourself? You need some place/time for comfort and self-indulgence, I think.