What is wrong with me

I am 6 days... I am NEVER more than 2 days late! I literally feel like I’m about to start my period I feel like already bleeding my coconut feels like it’s bleeding and I’m not. I’m cramping I’m nauseous uncomfortable and have headaches. I took a pregnancy test the first day of my missed period and it was negative. I took my second test when I was 4days late at the drs office and that was negative. I don’t know what wrong with me I feel miserable and all I want is to be pregnant or for af to hurry the F up and get here so I can try once again. I feel so ugly inside!