I give up...

I've literally been testing since last Tuesday..my cycles are irregular but not extremely irregular..i have never been more than 3 days late and i have pcos..im 7 days late with no symptoms of AF and i always know when its coming..on the 3rd i had HEAVY cm and it was crystal clear after sex..and idk if i ovulated later than glow predicted or what but we definitely had sex in what i fill is a good amount of times to get pregnant..i miscarriaged back in june and with that cycle i ovulated 3 days after, i was also on metformin ...maybe im testing too early or something..i just feel extremely discouraged.