Hope all is okay SB. I lost some water with E at 33 weeks and my hindwaters had gone.
I don't want to scare you, but I would get checked out if possible. My first thoughts were that maybe you'd had a show and your hindwaters had gone. If this is the case the hospital can give medication to stop labour starting.
I'm sorry if I'm completely wrong and/or worrying you over nothing, but I always think it is best to check these things out. If I hadn't have gone in when I did with E I would have had him a lot earlier than I did.