V.W.
That sounds like what happened to me... Check out my last 3 posts... Or the 3rd from the top and then the top. Either way, I thought my water had broken on Thursday even though it was only a little amount and I went it to get the swab. It came back negative. At 5am on Friday I woke up to a soaked bed and now I'm laying in the hospital bed next to my day old son. I'm not sure if the swab came back negative because my water hadn't broken at that point or if the test came back with false results.
Good luck