when do you think I should consider myself 1dpo?

Maggi

last period: August 26th. I'm irregular so this is all frustrating at times. my last 3 cycles have been 27 days, then 41 days, and then 40 days. currently i am on CD 14. my opk was darkest around 3pm CD 12 (but I think the tests I bought were too cheap to get a true positive from things I'm reading 😐😔) I had a TON of ewcm yesterday (CD 13) and a few days before as well and spotted around 10am

yesterday. i also had cramps on cd 12 and 13 and a few today but definitely less. today, I am just about as dry as I ever am lol so if I had to guess I would have ovulated late last night or early morning. when am I 1dpo? today or tomorrow? Lol