Someone please help me?

I took these olvuatuon test today. I took two to make sure it was still the same that I wasn’t ovulating yet cos I had read reviews that they’ve said no ovulation then the same day that they were so I took two to make sure.

My question is.. can I start to ovulate tomorrow or by the end of the week or will it be like a week that I’ll reach peak fertility? I’ve got 7 tests left I don’t want to have to buy another packet unless I have to so I don’t want to have to test everyday this week and not get a ovulation smile then have to buy another one for next week (they’re like $40 for them)