My dd2 is 5, almost 6.
She nearly always vomits after a late night. Most of time its after a party, so we put it down to too much crappy food, or too much excitement, but lately, any late night (party or not) can cause her to vomit.
Sunday night she went to bed at her normal time (8.00pm) but messed about in her bedroom (she shares with her sister). There was no school the following day so we didn't particularly put our foot down and we just let them play. They weren't overly exhuberant as dd3 sleeps in the next room and is easily woken so they weren't running around or anything. She finally went to sleep around 10pm and woke around midnight vomitting.
She threw up a couple of times and then slept through without incident till morning. She was right as rain next day. She always is.
Now, after a party, I can accept that it would be normal for her to vomit - but after a late night can't be normal, can it?
Is it common/normal or should we make a trip to the gp's?