Morning Sickness / Female Fetus?

For about a week and a half now I've started my mornings with the WORST nausea! Thrown up twice & I'm only going on 7 weeks this Tuesday. I'm hearing a lot of people saying that you're more likely to have a girl if you're experiencing morning sickness & I'm wondering if any of you have experienced this happening! Did you have morning sickness in early pregnancy and have a girl? To boy mamas, did you experience morning sickness during your pregnancy? If you have both, did you notice a difference between pregnancies?