2 Days Late

I'm 2 days late and got a negative test ugh its driving me crazy I'm never ever late. I'm not stress I just dont understand. when I got pregnant with my son I got a positive 2 days before missed period. I've seen a lot of women who said that they didn't get a positive till they was a week or more late and they all turned out to be pregnant with girls. Could I still have a chance?? Is this common with being pregnant with girls or something? I'm just trying to figure out what is going on.