Is this myth true?

So I just took a pregnancy test yesterday and it was a solid two lines immediately so I been pregnant longer than I knew. I feel extremely nauseous to the point i’m gagging daily. I googled info about it and it says it’s most likely a girl because girls cause morning sickness more. I just want a healthy baby but praying for a little boy as well lol. Is it true morning sickness is really when having a baby girl? Any signs of different sexes?