Far, far away

My husband and five year old left for home today. They went to do the 'man' thing, and get the house all warmed up and make sure all the pipes work and the water is running so us girls and the 'baby' will be comfortable when we get home.
They were so excited to be going. A father, a son, two dogs, and a cat, on a sixteen hour journey.
Tonight they are in Oregon. I am still in California. It is the furthest I've ever been from one of my children. I've barely ever even spent a night away from him. He is so far, I couldn't even get there quickly if he needed me. It is a big step for him to go so far, but home has been calling him for a while now, and he wants to get there.
It broke my heart tonight when on the phone he said he missed me, he sounded so big and brave, until I said I missed him too. Then I could hear the sadness in his voice. He was wishing I was there. Now I just want to jump in the car and catch up with them. I don't care if the house is warm or if the water isn't running. I miss him terribly and it's only been fifteen hours since they left. How am I going to make it through a whole week? And more importantly, will he? I think I am going to have to leave sooner than I planned.