Walgreen's ovulation test strips

Have any of you ladies used them? Do they work? I got some and after having a 17 day cycle (normally my cycle is 26 days) I decided to test every day until I get a positive opk in case I'm ovulating earlier or not at all! I got what looks like a positive (or close to it) yesterday on cd2 so I tested again today and got another almost positive when I used my clear blue digital I got an empty circle! I'm trying to figure out if I should get some different cheap opk's or if this is normal?! Pic 1 is yesterday's test pic two is today's tests