12 hours to surgery

I am a single parent of two children, 16 and 10. So I spent most of the day doing laundry, making meals for the next few days for them, and hugging them alot. I know that I am going to be ok, but I still feel a little nervous. I asked my parents not to come....I have a feeling my father will probably show up tomorrow anyway. I am so used to doing things on my own...that I really don't want to burden or worry anyone.