Bulldog throwing up - seems like after playtime, any suggestions?

After he plays is he just puking up water or is it food too? My puppy will play like crazy and then drink a bunch of water and then run and play more and will puke up water. We took her to the vet and they said its normal. She also puked up her food when she ate to fast and we got her a slow down bowl and it has stopped. It is still a good idea to get him into the vet just to be sure that he did not eat something. I hope that its just him eating and drinking to fast and not letting it settle in his tummy!