Ovulation quest

My question about ovulation..

ive watched Youtube videos and googled the process .

But when comparing that with Glow is confusing me. my fertile window is about 6 days long

is that simply saying Ovulation can/might occur during then?

- i have opks

- despite my profile i am TTC by normal fun regular unprotected sex for months..

- my SO is 50 im 33 he has othet children

- our 1 yr anniversary is coming up..i want him to take an OTC sperm test.

just a quick background.