Hello Loneywife, I understand that exhaustion. It is entirely normal and you need to take as much rest as you possibly can. When my Mom passed away a few months ago , I went through that same mental and physical breakdown. I survived the service and as soon as it was over, it was like my entire body just shut down. I spent the next two days in bed. You might find yourself needing more sleep. Please allow your body and heart the time it takes to recover.
Love and Hugs,
Teresa