blood work for gender

Chelsea • Military Wife💍Baby Girl Due soon🐘🥜

so I had done the early blood work to get the gender of the baby..... it said track to our big ultra sound and we told her we knew it was a girl but I dont remember the women confirming it. and I just had a terrible dream she came out a boy lol......

did anyone have blood work done and it wasnt the gender the results said?? ughhhhhhhhhhh