Best OPK

Tayler • Married 5/31/14, dog mom🐾 🐾🐾🐾🐾, momma 💙👶🏻11/16/19

Hey ladies!! I’ve been attempting to track ovulation with an OPK I bought off of amazon, and I’m on CD 18 and have not had any signs of a positive with this brand. This is also my first time tracking and using OPKs. So I’m interested in which brands you ladies think are the best, any any tips would be nice! Not actively TTC, but not preventing either! First pic is the box, second is the packaging it comes in, and third is what I’ve gotten so far! Thanks in advance ladies!