I’ve been ttc number 2 for some time, and have just this month gone back to using OPKs (abandoned them as was never getting a positive - but am ovulating as I have been tested at docs)
Anyway, tracking my ov symptoms, ie cm and pains, I seemed to be ovulating mid cycle so thought all was normal.
But I still haven’t had a positive OPK this month (I’m on CD 19 now) but my darkest lines were around CD 17/18.
My cycle is usually between 24 and 27 days. So if I’m not ovulating until later does this mean I’m unlikely to be able to get pregnant? Could this be why it isn’t working for us this time. I’m on cycle 15 btw 
Any advice would be appreciated.