I don't think mine was sticky. But I suppose everyone's is different. Your plug regenerates. It sounds like it might have been a small leak. When I had DD, I had spontaneous small gushes of fluid. Baby's head can be plugging it all from coming out, or I think it is possible for it to repair if its a small leak...(I think the mid wife told me that, lol it was 6 years ago now...)
I agree that unless you feel that there is something wrong, or that it's 'time' for bub to come, don't go to hospital. But maybe you could ring the mid wives. They can give advice to you from afar. You don't have to go to hospital unless you need to.