Glow doesn't understand I dint ovulate :(

I had miscarriage on may 12th naturally and it lasted abt 10 days. It was my first pregnancy and doctor said it is natural and there was nothing anybody could have done. It has been over 20 days now and all my ovulation tests(strip) have been negative almost the slightest of pink. But glow app shows I ovulated two days back on may 7th. How do I correct it?

If anybody could advice as to when I may ovulate it will be helpful for me. Thanks for all support and love ladies <3 Baby dust to you all...