Hey OP
the same thing happenend to me the day b4 my show started. Thought it just was the 'artefact of DTD' the nite b4- love the description.

Next day my show started- just a little and went on to have Levi the day after. My waters didnt break until just b4 i hit transition in labour. It came out as a whole bag and hit the floor ( i was standing) like a water baloon popping- all over my doula and DH feet- it was a crackup. Also the rest - which was most of my show, came out with my waters as well.

Also it could be your pelvic floor muscles starting to kack themselves a bit due to pressure and you might not be able to hold on as well as usual! Totally normal.

OOOH its getting close!!!!