Ovulation irritation.

Hannah • Will be trying for baby number 2 soon!
This is the 4th day I have recieved a negative ovulation test....today is (according to glow) supposed to be my peak fertile day. I don't know what to believe now...I still have 2 possible days that it could show up...but after those 2 days if it doesn't. What should I do to be able to find out when I ovulate. I have 32 day cycles and glow was exactly spot on about my period.