Dr. says i might have lost my pregnancy

I went to the Doctor for an ultrasound and they still can't see the baby just a yolk sac. The Dr. says its 50/50. I either had a bad pregnancy or its to early. I am devastated because today is my sons first birthday and i dont want this to overshadow that. I don't want to move, just sit in a corner and cry but i can't. I have to move forward for my son. Please pray for me. Monday im suppose to go back to see if the baby has shown up with a heartbeat. This puts things into perspective. Nothing in life is more important than your family! Not careers, money, or materialistic things, just your family. Hopefully god has something in mind for me, for now i have to believe that.