Aye, I will start opk in about 3 days (10 cd) in case my body decides to be early. I never know if the body wants to be early or late with ovulation. Probably one stick a day starting from 10 cd until I start seeing a second line, when that happens, I'll probably start testing with the stick twice a day if not three to monitor the progress of lines. The earliest I've gone is 13 cd before, and the latest is 18 cd. So frustrating when my body's not predictable like I thought.
Happy Holidays to all of you!