Hi so this is my first cycle trying, a friend of mine gave me some OPK sticks to try. I started using them about 4 days before I was due to ovulate (according to the app I’ve been using to track my cycle for about 3 months prior TTC) the sticks say that the second line needs to be as dark as the control line to indicate ovulation but the line never got dark and now it’s gone all together. Today is when I’m meant to be ovulating (according to the app). Have I missed my ovulation day? Or did I not ovulate at all as the OPK never had a dark line?