this happened to me about 2 weeks ago i stood up after having a wee and gush loads of fluid leaked out, it was clear and didn't smell, i rang midwife next day she told me to lie on my left side for half an hour and when i got up if anything trickled then ring labour and delivery. nothing else came out so i just left it. My waters did leak in my 3rd child at 22 weeks but i never noticed it i went in with bleeding and scan showed waters had gone. after 11 weeks of them leaking i finally went into labour at 33 weeks and had my little boy. I would always say ring midwife any worries.