I've recently started TTC last month and got a BFN.
I'm starting to think about my next ovulation week. At the moment I'm just using an app to work out when I ovulate rather than working it out myself. I'm going to keep doing it this way but if I don't get a BFP over the next few months will maybe look into it.
But I was wondering.. has anyone worked it out and it's been way off when they thought it was?