Plz help!!!!!!!

babygirl

So i ran out of my easy@home OPK's so I went and bought some at the dollar tree..Has anyone had any luck with these

Test. I normally O around CD 20-25 well my Easy@home test had gotten dark but then started getting light but It had happen before....CD 20 is 2 days away...so are the dollar tree any good......thank you in advance.....