So I have fairly severe emetophobia and my 4-year old son has a stomach bug today, I've been at home looking after him all day. It doesn't seem like a really bad one as stomach bugs go and he was mostly OK by bedtime but I've obviously been terrified all day! I used to get stomach bugs a lot as a kid but I don't remember my parents catching them very often and I've been very diligent with handwashing - still, there's been a lot of sick-cleaning and cuddles! So - and I realise this may be an impossible question - if I've got it, when do you think I'd know? His first vomit was around 7.30am.