Am I ovulating?

According to this app I was ovulating over the weekend the most fertile day been Sunday giver today (Wednesday) I've had horrible pains in my side so I bought some ovulation tests on the way home from work and this is the result! So am I only just ovulating and does this mean I didn't ovulate over the weekend??? Stupidly I didn't take a test to check if I was over the weekend as normally this app is right 😩😢