My dog is puking and idk what to do!?

Do not withhold her water from her. Same as with people she will get very dehydrated. One of my dogs had a problem about a year ago where she would puke about every 20 minutes. Probably from something she ate that she was not supposed to I called my vet and was told to give her a little pepto and see if it helped. it did. I suggest you call your vet and explain the problem. If its a good vet they can tell you what to do over the phone.. I hope she feels better soon