Need a Lil input...

Ok ladies I starting test of ovulation when glow predicted that was my ovulation window... and af is due today or tomorrow per glow. I usually spot before she comes. Now when I was testing I never got a true +... so I tested four days later and I got + on cd 20 So that means it should push back my af 4/5 days. Well no af today and no symptoms of showing either. So I tested for pregnancy just in case I did ovulate cd 15 and it was negative today. So I have 4/5 more days per glow for period which I would be 7 dpo today. So either I didn't ovulate or I did and it's to early yet. Any of u beautiful ladies had this experience or heard someone that it happened to?? Anything to ease my mind a lil...