I need some help

Hey girls, soooo I’m kinda bumped out and I need to vent. My period last month was 17 days late, this month we focused on just relaxing and enjoying each other. We made sure we had plenty of sex. I didn’t track ovulation at all. But according to this app I was 3 days late, I started to bleed yesterday but I feel pregnant. Getting negatives test, but my boobs feel heavy, and I have a cold that I can’t shake off. Any advice?! Anyone going through this? Why is it so hard 😭😭 I just want to get a positive test!!! We are trying to have our first rainbow baby, we lost an angle July 1st