Did my water just break?

Hannah
Okay, I was sitting in a chair, chillin. Went to get up and think "ah hell, I just peed"
Took a few steps, a little more comes out, go to waddling to the bathroom, leaking all the way. That was maybe an hour ago, still leaking a little bit at a time, and I'm cramping and my lower back is hurting. I called my doc and she said if I was still leaking an hour later to head on. Or I could go now, but I don't wanna drive an hour and waste gas for a false alarm. Every time I get up a little more comes out. Has this happened to anyone else? Also, I'm 38 weeks and five days. And last I was checked I was 3cm and 75% effaced