We had arranged to go and visit friends tomorrow. Friend contacted me Tuesday to say she had an awful sickness and upset stomach. She was okay again Wednesday evening. Fine yesterday. I rung her today to discuss tomorrow and she casually mentioned she wasn't at work today as she has got the upset stomach again.
I have cancelled our visit tomorrow and she isn't happy and says she will be fine tomorrow. 
Even if me and dp were very careful with hand washing and using the toilet, my dc won't be! to top off the fun, I now need to treat the family for possibly threadworm and clean the whole house. 
AIBU?