Positive opk day after period!!!!!!!

I just finished my period yesterday, it last for 5 days and the 6th is brown spotting . I did OPK this morning and it came positive and I just did this now and it even darker than the morning one , I don’t ovulate around this time because my cycle is 30 days.

Idk what to think and what this is could be?!

BTW I did pregnancy test it’s negative