kateaton - Don't wait for the OPK! Get to it! After reading loads of studies about the LH surge in the blood vs. when it can show up in the urine, trust the EWCM. One doctor explained it as the EWCM opening the door to let the sperm into a "reservoir" so they'll be ready for the egg. Sometimes the CM can dry up right before ovulation. However, with that good EWCM, it will keep the sperm alive 3-5 days. I am on the same CD as you (CD 16). How long are your cycles?
Still negative OPK, but more ewcm today. Not waiting anymore! My temp was still low this morning so I know that I'm still good.
I don't know my cycle length, since this is the first cycle since having dd3 almost a year ago. I used to be around 31 days.