DS had gastro at 6/7 months too.

The parent helpline suggesting putting DS on formula with no lactose and not giving him such big feeds but more often. Eg: instead of four feeds of 240ml he got 8 feeds of 120ml with drinks of water as well.

It would go in one end and come out the other - looking the same as when it went in.

He was generally happy in himself though and quite happy to projectile vomit and poop in his nappy.

He got over it within three days.

He passed it on to my DH who didn't take it quite as well as DS. In fact DS was a star in comparison. But, I suppose adults aren't as happy to puke as babies. It's just a given with babies.

The most important thing is hydration. If they're not hydrated enough I'd be going to the hospital.