What Could Cause Vaginal Discharge?

Hi there, Today I noticed thick gel-like discharge building up slightly at the front of my vagina. Just now, while sitting at my computer, I felt like water was leaking out of me. I stood up and liquid ran down my leg. It s odorless, and definitely didn t feel like it was coming from my urethra. Any idea what this might be? I had intercourse on the 11 August, and took the morning-after pill on the 12th. My period started on the 18th of Aug, and is therefore due around September 17th. This isn t the first time I ve had this clear discharge. It happened to me earlier this year, in about May. I then got a cervical smear test done and it showed up normal. Any help with this one appreciated! Thank you.