Had little tabby boy for just over two months and he's always been a sensitive soul, had diarrhoea and blood in his poo when i first got him. Cue vets visit and a probiotic.
Since had him on Royal Canin sensible dry food to nibble and their Digest sensitive pouches as suggested by the vets which seemed to do him wonders. Put on a bit of weight, coat looked shinier, bowels habits much better. The occasional soft poo but mostly normal cat poops once a day. We we buzzing.
Until the last week or so he's started randomly vomiting 
First time he'd eaten some grass, and just the grass came up which I know some cats do for furballs etc. So wasn't concerned.
Second time was last week, a proper vomit but was just like regurgitated food but I just put it down to him being over fed because OH gave him a whole pouch in one go and he normally just has half and I'd given him a little bit of salmon 
Then this week he's been sick twice. Both times proper vomits with solid food first then a liquid bile afterward No hair balls or anything.
Each time he seems fine in himself. Still runs around playing with his ball, still wants fuss and cuddles, still goes back to his food bowl for more dry food. Don't know what to make of him. Going to ring vets Monday but reluctant to go OOH over the weekend because he seems so well in himself. But really don't want him to lose the weight he put back on because he was looking so much better.
Bless him I feel awful when he's ill, although he doesn't seem to care, his happily running round chasing his furry mouse 
Anyone else got a sticky cat?