My pup is very ill, threw up over 10 times and won't touch water... could this be serious?

I would say where he is not drinking water and has been throwing up he should be seen. He can get dehydrated. Is he alert and active? If not then he needs to go right away so the vet can give him the minerals etc he needs.

Hugssss I know it is rough when our babies are ill, I have one now who is il.

Dehydration is the biggest worry in pup.

I suggest you contact your vet for advice.