I don’t want to use OPK & etc, but I have a question!

So I have never use opk’s or charting. I just bd and pray for the best. 7 pregnancy total and 3 living kids later I’d say it’s been working pretty good. I know myself I’ll will become completely obsessed if I started taking part in using these things. Natural planning hasn’t failed me so far so I’d like to stick with it.

But of course I have a question lol now that I’m a bit older I noticed that I no longer get ewcm, but now I have actual ovulation pain in the middle of my cycle. From a natural planning stand point should I assumes that’s when ovulation is taking place?

For better understanding. The app said I should ovulate on the 16th but I didn’t feel ovulation pain till the 19th. I have 30 day cycles too if that’s important to know.

Thanks in advance guys!

Edit- I know that none of these things are fail proof or 100% accurate use of confirming ovulation.