How far along am I? How are you calculating if your cycles aren’t always exactly 28 days?

Everything says something different. Does anyone know of a calculator that will tell me based on positive opk date?

Last period August 22nd. Average cycle anywhere from 28-32 days. Peak opk 9/8, still positive 9/9. Premom says my ovulation would’ve been 9/9 based on my OPKs. According to that, my first positive pregnancy test was 9 DPO.

Some apps say I’m 4w1d, some say 4w3d, some say 5w1d. If I didn’t track ovulation I’d be 5 weeks. I’m now 17 DPO, so I’ve known I’m pregnant for about 9 days.

I am so confused! It’s not that big of a deal but I just like to know. Some websites have a conception date due date calculator, but we BD’ed so many times idk if it’s saying when did I ovulate or when did we BD that made us pregnant?

Just curious how y’all are calculating it in early pregnancy.