Confused

uA

I usually don’t track ovulation like on and off.my cycle is 31-32-33 days long or even 34 35.I am on cd 22 in the start I didn’t track my ovulation but cd 16 onwards once a day I used opk all were negative around cd 20 I believed that I have missed my ovulation or didn’t ovulate there was little to no cm in these .yesterday around 9pm I started cramping with creamy cm I again tested around 1am and it’s still negative.i am confused is it because of ovulation? Af is expected in 10 11 days