So, my son has been “off” lately. For one, he threw up twice last week. And had some type of rash, that lasted 24 hours but would go away with Benadryl. That is gone now, and I thought he was doing better. My mom said he didn’t want to eat Monday; he just slept from 7-9:30 and then 12:30-4. And then wenr to bed around 7-8 I think. Tuesday he was fine. Ate normal, played, stayed up late etc. but then today, she said he is whiny, and ate a few bites, and went to sleep just now. So he has just been whiny and just wanting to lay around instead of playing. So he has just had some off days where he hasn’t been his normal self. Is this something I should be worried about?

He is about to be 19 months.