Hi, so we have only been trying since March, in May my AF went awol for the month and turned up on June 18th. So I started doing OPKs on CD 14 as I thought I normally Ov on cd 17. A week later on cd 21 and they are getting darker I think? They seemed to get a bit darker and then lighter again then darker. We have dtd a few times in the last week but I'm not sure if we should keep going now? Is cd 21 really late to Ov or is something else weird going on? Will try and attach picture. Would you take any of these as a +OPK? Thanks