Pray continually and ask God to help you through this difficult time. Also considering taking a daily iron tablet to help with your low energy. I take two to three iron tablets a day. It helps keep my energy level up. Eat foods that you like and that make you feel good. My two favorites are steak and yogurt. (Not together.) I feel so much better when I've eaten either one. Eat natural foods as much as you can. Prepared foods have too many preservatives in them.
lbrock has some very good ideas also. Don't try and do everything at once.
Also, think about what is the worst outcome? Death. But then you will be in Heaven and in good health. You may have to leave loved ones down here for a while but they will eventually be up there too! Not everyone believes this but it's true. After all God sent his own son, Jesus to live on Earth as we do. Jesus died and then rose from the dead and went back up to Heaven. It states in the Bible that 500 people saw Jesus after he rose from the dead. (They couldn't all be lying.) So we know that Heaven is real and waiting for us.
Best wishes! I will say a prayer for you.
PML