Not sure what to think...

This morning I woke up went to the restroom, went to get water and I noticed my underwear got wet, a little ran down my leg and wet my carpet a little. I called my OB and they said that's not my water breaking and I'm fine. I asked if I should come in and they said no. My concern is fluid leakage. Anyone have anything similar to this? I'm 34 weeks. My husband and I had sex last night, so I'm not sure if that had anything to do with it.