Next op 4th July

Hi guys
My next op is in a few weeks and I am getting up to the point were I am really worried about it .The operation that is going to be done is where they take one of the rods out and put a longer one in and I might be going into the H.D.U (High Dependency Unit) for a day but hopefully not for more than one night!
We are hoping that I wont be in hospital for more than 2 weeks but not sure. I will also be missing the move-up day at school so I wont know who my teacher is ?( by the way I go to a middle school so ,no, I wont be going up to secondary school this year) so hopefully I will get back to school on the last week of term!
Thanks again
Naomi