here are my opks from CD 9 to CD 17 (today) in November I got a positive opk on CD 14 using clearblue digital, that month I got a positive which ended in a chemical. In December I used clearblue digital again and finally got a positive on CD 21... super late but chalked it up to chemical throwing it off. now this month I bought strips on Amazon because digitals were getting expensive every month and this is my chart... the darkest day it seems I've gotten so far is Jan 11th... but it also looks like it could be a faulty test. I had some EWCM on January 15th... and now it's more milky... I'm so confused!! maybe I just missed my surge on the tests?? first time using these strips. anyone have any idea or see something that maybe I don't?? oh and my cycles are usually 30 days and VERY regular.