Soooo

Ok so i dont know how accurate the app is persay but i been monitoring everything. Im go into detail so try stay with me lol.

I was on the depo for 6 months been off of it for 7 months now. I have had one pregnancy but sadly lost it. So now with that being said i wanted try be more accurate on timing ect. Well about 3 weeks ago it showed ovulation. Well on them days i had sex 1 of them days said 33% pregnancy a 22% and a 9%. Well my period is always on time and now im 3 days late. Yes not big deal not to late but still something. I have taking a rexall pregnancy test 2 of um in past week. Nothing! Is it a bad kind do i need get a different type test or am i being paranoid? Look forward to hearing your answers and responses