Leaking fluid

Saturday I was having Braxton hicks contractions several times. Later during the day I had fluid running down my leg. I'm not sure if it's urine ( from the pressure of baby-it's normal for me to leak urine) or if it's my water leaking. Anyone else have similar situations? Today I am crampy and have had several Braxton hicks contractions again. I have had my pad saturated however I know it's mostly from not being able to control my bladder. When do you know the difference?