Positive OPK?

I've been TTC for over a year now and have been using the Clear Blue Advanced Fertility Monitor for 3 months. The last 2 months I just got loads of High's and no Peak's...So this month I thought I'd try some cheap ones alongside them. Is this a positive? (Still got a High on the CBAFM today). As it tests for Estrogen and LH I'm not sure if my hormones are too strong to detect the LH or whether my LH isn't strong enough.