When I was overdue with DD I thought I was leaking a few times. Once I believe it was watery mucus which can liquify and seem much like waters leaking the last time it would leak for a while and then stop, then spurt again yada yada. Went to OB appointment and said thought my waters may have been leaking this morning he did an exam and I was 4cm asked me to cough and nothing came out so said no- no waters leaking. 3 days later went in to have ARM and what do you know - no waters there??? So he agreed it was possible at some stage I had lost at least my forewaters. Bub was fine and after a bit of prodding around (still no waters breaking) labour started and with each contraction there was a small gush.

All the best to you and hope it is the start of something!