Opk help?! CD 18 now, slim to none AF....Yesterday some of you ladies told me my opk was a no-go which is the top opk.....NOW, the bottom one is my opk today..... Yes, no, maybe so? Help me out ladies! This is my first time using opks. :) the test line is slightly darker than the control line. Almost as if it stole some pink from the control line, compared to yesterday's.