I had my period on the 10th March my cycle lasts 28 days. I am new to these ovulation sticks so I am learning. I have taken one everyday since the 23rd April. The lines seem faint then they get dark other days. Not sure wether it has to be as dark as the other line? I'm testing them as next month we are TTC. Have these ever worked for anyone? I can't post the image as I'm a new user 🙄