BND, Your little boy is in my thoughts and prayers. I pray that they find out what is wrong and can repair the situation for him. He is so young to have a serious illness, just as your little girl is too.
Stay strong, have faith and he will watch over you and your family during the testing.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
