So I had a CP last month. My period was a few days late but arrived on 28 February. I have been using clearblue advanced OPK since last Thursday, all results have been showing no peak (the clearblue advanced shows the rise in hormones with a flashing smiley face and then a solid smiley face once you reach peak fertility). I know the tests aren’t faulty because they worked last month and are from the same packet. Glow had initially predicted that I would ovulate on Wednesday 13 March. Now it’s saying Saturday 16 (CD 17) because the OPK is not detecting a rise in hormones. Strangely I have the usual signs I have during ovulation, cramping, bloating and flu like aches in my arms and legs. Just wondering if anyone has had a similar experience? I have read about late ovulation and missed ovulation in the cycle after a CP, but why do I feel like I am actually ovulating when the tests say otherwise?