Nauseous

Bonnie • 28 years old, wife, mommy of a 2 year old and one on the way!!
Ugh my previous pregnancy my nausea wasn't as bad as it is right now. I had a girl for my first. I'm 7 weeks and have been in bed all day. I threw up twice today and I have such a bad headache. I've made some peppermint tea which helped a little.. 
I'm wondering if it's a boy this time? 
Is it true you have more nausea with boys than girls?