Do You Go By Egg White Cervical Mucus That Stretches Between Your Fingers

Do You Go By Basal Body Temperature.

Do You Go By Ovulation Tests?

I Got A Ton Of Clear Egg White Stretchy CM On July 19th.

My Temp Spiked this morning and I was told it spikes the morning after ovulation. that would be July 20th

but I got my strong positive opk today July 21st the line was darker then control line so what do I go by???

So When Did I Ovulate Idk What To Go By?.