DS2 age 6 has been sick twice this morning. But not violently and no other symptoms - fever etc. he's not a sicky child normally though so obviously something up. Dinner out nearby with friends tonight & babysitter booked (local student who we've used lots). If no more sick, wondering if wrong to ask babysitter to still come & expose her to germs? And wondering if I should be cancelling dinner to be here for him in any case if he's been ill this morning, even if he's OK later?