I wasn't that "mucus aware" while I was on the Pill, but all through the 8 years I had loads of mucus - probably some EWCM. I didn't ever have loads of EWCM though, just enough to make my pants dirty IYKWIM.

Came off the Pill in August and settled down almost straight away into 6-week cycles (first was a 5-week one) and had EWCM from at least the 3rd cycle as it was only the 4th cycle when I realised what it was, but luckily marked it in my diary anyway.

Best of luck with TTC when you do come off the pill.