So I've started tracking my ovulation day and fertile days for last 3 months. Been using apps to judge when I ovulate. This month I've used ovulation test strips and found out I've actually been ovulating 3/4 days earlier than the apps predicted, I've used 4 different apps and all give me different days. Has other people found that the urine test strips are more successful than using the apps...been unsuccessful the last 4 months and its making me worry now that I'm no longer able to conceive. I already have a child but I'm now almost 35....I feel really old this time round trying to conceive.