Confusing tests

So basically I came off the pill march 19th so I know my body might not have even regulated and ovulated this month, I've been taking femometer ovulation tests which have been terrible because they always come out with the faintest line which you can't see on pics but are there, I started using one step and they proved to be so much better, I use to think I ovulated on day 14 but apparently ovulated and concieved my son 2 days later, my lines on the one step tests on cycle day 17 aren't far off matching the control line and on day 18 the lines lighter, then today on day 19 nearly positive again, I always take my tests 2 times a day at the same times 10am and 5pm, holding my wee for same amount of time (3 hours) and not drinking much before hand, have I ovulated or am I ovulating?! Again I know my body might take time to regulate but need advice as its our first month ttc baby no 2 😊