Water leaking

How can you tell if your water is leaking or if it's just the normal increase in discharge? I have an appointment Monday so I'm going to have them check. I'm almost 32 weeks and when checked a week ago my cervix was closed. Can your water leak if your cervix is closed? I've just noticed a slight increase in discharge and it seams more clear and liquidy than usual. I've been having a lot of pressure and pain in my abdomen/vaginal area (doctor said last week it was probably round ligament pain) but idk.