Upset/Annoyed/Tired of BFN

I'm 14 days late on my period. I've taken many home pregnancy tests all negative. I took a blood test 3 days after my missed period and yesterday negative. My periods the last 3 months have been all over the place. Last month I was a week late. The month before that 2 weeks early. We had sex 20 days ago that I can remember because it's logged. We haven't been really trying so I don't know if I logged all the times we have. I would think by now I would be showing positive with the blood test if I was pregnant. Im emotionally drained with this. I guess I needed to rant I don't know what else to think right now. That I'm hoping for something that isn't. I feel right now so defeated.