Ovulation Confusion

Leah • Mother of 1, Due 6/28/2020 with #2

Just got of BC so not sure what’s happening. Bled like a regular period right after stopping. Tested day 8-21 (today) with no positive OPK. Had some EWCM yesterday. Anyone have any idea when ovulation might occur after stopping BC? Did it happen right after I stopped BC so I missed it and have to wait for next cycle? Last pregnancy got pregnant after second period after BC and can’t remember if I got a positive OPK the first cycle or not.