Ovulation test brand

Desiree • Ttc baby #1 after a miscarriage back in October 2013.
This is my first month using ovulation tests so I didn't want to spend very much money so I got the equate brand that is a seven pack. Supposedly I should ovulate tomorrow or Monday but have yet to get a positive test. These tests are also blue dye which I didn't even think about when buying and the colors seem very light on both lines so it's hard to read. I know my apps are just a general idea for when I could be ovulating but I'm very curious to know what you guys have to say about the equate brand ovulation tests? I don't want to actually be ovulating but the test be negative and not realize it!