So just removed Mirena 6/4. Had my period from 6/20-6/26. Should be ovulating on 7/6 according to Glow. I tested on the strips and received no line. Then the next day a faint line, then a little darker line and now I can barely see the line. How does this work? If I were going to ovulate I assumed it would gradually get darker instead of lighter or am I wrong? Please help.....had Mirena for a total of 10 years and wanna get my body figured out.