I've just had a vicious tummy bug at 15 weeks. After 24 hours of having the squirts, only managed 2 wees despite over 3L of electrolyte drinks, and being too light headed to walk to the toilet on my own, I ended up in hospy on a drip.

So I've been told (home now) just to keep up the electrolytes, eat when i can, and I'm just sticking to simple carbs to try and plug things up a bit.