So I've been testing for O with wondfo ovulation test strips. My OB has been helping me figure out my crazy cycle and she said I should have been ovulation on friday so I came home and tested for O and got two dark dark lines. I've tested everyday since and have had 2 dark lines...?? I thought the lines were only dark if you are ovulating and that you only ovulate one day of the month? Someone explain please? Thanks in advance!!!