It depends hun,you may or may not have,as long as you do them same time each day,hold pee long enough.
I never noticed ewcm,but charting found better,try fertility friend or ovusoft,they have great charts so all you need do is temp.
I was only using opk's as I don't notice the ewcm. But I tried charting for a few days and couldn't get the hang of it or understand if I'm not successful this cycle(only my second month) I won't continue on......
On the other hand I started using the opk's on Tuesday the 9th, for the life in me I can't see how I missed the surge.
No your right about ovulation hun,it happens for most women 14 to 16 days before your period.anxiety for one can delay it,which obviously you are.dont blame ya.you may have missed your surge,do you chart as well as use tests.tests are good,but since they only confirm O will happen,not that you will in fact Ovulate.charting on the other hand will confirm ovulation.