Joyful>> I sure hope it's cos smiley is more sensitive. Otherwise, it may mean the egg is having some trouble getting out (see tangerinz's post), which would also mean this cycle is gone for me liao. But I did notice that my EWCM dried up 1 or 2 days after I detected the first +ve OPK.
For my #2, I tested OPks all the way. So what happened was I got a +ve OPK at CD17. Then it was all the way -ve until CD29 -- that 2nd +ve OPK was actually an indication that I was pregnant! But at that time, I only test once a day, using first morning urine. This time round, I'm actually testing 3 times a day. I usually get the +ve OPK in the afternoon. It's possible that my body always behaved this way, even in the past, just that I didn't test that frequently in the past so I didn't find out back then.