Ttc after pill

Hi girls I'm new to ovulation tests 😂😂 but I've recently came off birth control on 26th January had withdrawal bleed 2 days later then on 23rd Feb I had a period so I've had intercourse on my ovulation day and the days leading up to it only going by this app with dates and I had cramps ect but I've ordered these tests for next month to track do you think I've ovulated this month because I know it can takes a wile to get back to normal I took this ovulation test just to see what it's like lol I know it's negative but by this app I ovulated around the 8th march.. Thanks