Ovulation help!!

hi ladies I have been off my pill for 3 months now after being on it for many many years! However 2 months ago I took a pill just one through habit after taking it for so long! I have been trying to find when I ovulate for the past 2 months through tests/sticks when my LH surge has not yet been detected eiher of the months, I test for 5 days every month at around 12:30pm and use the online calenders to know what days to atart using the tests approdimately. I am so so worried as I have not yet ovulated in 2 months, could this be because of the one pill I had? Am I testing at the wrong times? I am so neevous as all I want to be is a mummy and when I am not ovulating it is so upsetting. Thank you