L.K.
I am a midwife and what you are experiencing is very normal. Sometimes they can be caused by dehydration so it was good that you drank some water. When you start having contractions if they go away after awhile you are not in labor. Contractions should get stronger, longer and more frequent. Stay home as long as you can once labor kicks in. Don't go to the hospital too early or the interventions will start and your chances of a VBAC will diminish.
Lisa