When do I know I’m ovulating?

Karla • Have an almost 2 year old. Been TTC from 1/2020- now (TTC from 3/18-9/18 for first baby)

I’ve been testing my ovulation for almost a week now and it still hasn’t appeared positive. The glow app says I’m ovulating but I’m afraid I’m not. 😞 i sometimes wonder if my pee isn’t strong enough to detect any hormones or whatever it is to get positive. Trying to get pregnant sucks! 😞