There is no point to this post really, other than an attempt to help my anxiety by getting these thoughts out.
It's my son's birthday on Saturday and we have a party planned with entertainer and some friends from school. He is beyond excited for this. The child he sits next to at school is unwell today with sickness after being fine at school yesterday, and I just keep thinking my son will be next and we'll have to cancel the party 
I know there are worse things, but he will be so upset.
Now for the part that's supposed to help according to my counsellor:
I've heard this negative thought, brain there is no point keep telling me, I have a plan should this happen:
-
we will rearrange the party, the entertainer is transferable (checked this when booking)
-
the cake will not last, but we can get another, it's not the end of the world
-
my child may feel sad and poorly on their birthday but we have half term next week and we can do lots of lovely things to celebrate on other days
-
it will be heart breaking for a 7 year old but they will get over it, and once they get the rearranged party it will just become a story he tells about the year his party was cancelled