I've been joking about this!!
I don't wake up to go to the loo in the middle of the night, so have been a bit worried about wetting the bed and not being sure if its my waters or not.

Friends last night said to buy a few shower curtains in preparation, which they didn't end up needing as its thought her waters broke in the bath.
It's quite different to wee so you'll know the difference It's like normal vaginal discharge - watery with white bits through it, like watery and creamy CM combined. That's how mine was at least. And it doesn't smell. A lot of women feel and hear the pop too so if it does happen, you may get that tiny bit of warning!