I don't get positives in the morning- EVER. Usually 3mu+, but I get the best lines in the late afternoon.
I surge later in the evening (after years of peeing on these things), I would suggest going to Amazon and getting the 50 pack of Wondfo opks (comes with 20 prego tests) for $21 including 2 day shipping (if you have prime).
Around the time I "should" ovulate (after I start getting 1/2 dark lines) I pee on one every few hours. If I didn't, I would miss my surge (I don't ovulate every month, I skip every 3rd/4th month due to only having 1/2 an ovary (and depending on where the folicle forms, it may not be viable due to the fact the ovary is glued to my pelvic sidewall.. talk about PAIN omg!)
If you are new to it, you really can't go wrong with those, and for that price, you can iron down where it is that you actually get your surge (whether it is morning, afternoon or evening), then move on to the CB digital ones (which after years, I am debating about doing).
Good luck!