water broke but not sure?

Mom • My name is Raschel. I`m married and have a wonderful 4 year old son and a beautiful rainbow baby girl born nov 2016.
I was just taking a shower and I had a sensation like I had to pee. Then it just kept coming out. It seemed like way more than just a normal pee. I'm 39 weeks pregnant. Should I wait for contractions or could this just be a false alarm?