ok so just a quick history. I had 2mirenas in total 8 years. No periods at all on it. Took it out 7oct got 'af' on the 9th. Only 1 day of spotting. I got a positive opk on the 25th (cd 17). I was sure my cycle will be 30 days thus expecting af today (8th) but then I started spotting 2 days ago BUT my temp stayed high. It only dropped this morning and now no more spotting. So I am quite confused as to when cd1 is. I will definitely be using opks this month too. Any ideas? I am very new to charting, all of this actually .