Morning sickness=Girl No Morning sickness=Boy?

Tania • 23🎂🎈, engaged 👨🏽💍, I have A 4 year Old Son 👦🏽❤️ & A 3 Month Baby Girl 👶🏽🎀
Is it true if you have morning sickness your having a girl?
And if you don't have morning sickness your having a boy?