TTC struggles

I really honestly thought I was pregnant as I got a faint second line with my pregnancy test a few days ago and even had some symptoms but today I started bleeding... I am absolutely heartbroken to say the least. I feel like I did something wrong to cause this to happen. I have clockwork periods, I track ovulation, I take my prenatals within the same hour every night, and I don’t drink or smoke, I feel like I’m doing everything I can to be healthy including 60+ minutes of exercise everyday including some yoga and pregnancy is not sticking or happening. I feel partially empty inside now because of this. I want this baby so bad and my partner was so excited, we have even started getting baby stuff and he’s been building the baby room. Now when I go in there my heart just sinks that we are not getting our rainbow baby yet. My hubby wants to try again next month but the possibly of not getting that full positive result makes me depressed...