Do the symptoms you experience during pregnancy determine what gender you're having?

They say that if you don't experience morning sickness, it's a boy.. or when you're skin breaks out etc. Do you believe in this? My first baby was a boy and I felt queasy for four months though no bad morning sickness where I had to throw up. This time I never had morning sickness at all and people say that it can be a boy again. What do you think?