I stopped breastfeeding 2 months back so my cycles are pretty irregular as of now. This is my first ttc using opk and I need your help. I m using wondfo opk. I test at 12 noon and 8 pm since CD 11. I started with getting very faint test lines and then on CD 18 and CD 19 the test lines were pretty close to positive opk and I was expecting to get a positive opk on CD 20. However CD 20 and CD 21 were again very light. Should I consider CD 18 and 19 as positive or still need to wait for an actual positive. Plz help. Thanks in advance.