Ewcm cd6?

Katie
I don't temp and last cycle was first using opks I got a positive on cd20 an the cycle was 33 days long before af came. Now cd6 and got fertile cm and lots of it. What the hell? My last 4 cycles have been 33,28,30,30 so they give or take a few days each month. Why would I be having ewcm now? I'm going to do a opk when I next need to pee.