Is there something wrong?

Hey ladies,

So I’ve been TTC #1 since my miscarriage in December and January. I’ve been getting my period on the 3rd of every month and been getting positive OPKS on the 20th day of every month. This cycle I didn’t track but I decided to take an ovulation stick just now to make sure except it’s negative? This is the first time this has happened to me… is there something wrong or did I just already ovulated? Or is it possible I didn’t ovulate at all this month? Is that even normal to not ovulate one month but ovulate all the others?