It's been a while (our oldest girl is 32 and our youngest is 21 -- and 2 boys in between), but I was sick all day every day with all of them for some months. With the first 2 there was a little pill available that they quit making, but all it was you can 'manufacture' yourself. It was just the ingredient in Unisom (sleep aid) and vitamin B-6. Here's the google search for it. http://www.google.com/search?q=bendectin+unisom+vitamin+b...
It was WONDERFUL! With the last 2, it wasn't available,so I had to learn however I could to relieve the sickness. The best thing I found was to just keep a little something on my stomach ALL the time while I was awake. Don't eat raw veggies when you feel the sickest. They don't digest and are terrible to throw up. Drink as much water (or whatever) as you can -- with one pregnancy I found that the clear liquid that you pour off of [home-canned) tomato juice before shaking it up was very soothing).
And I don't think the way you feel or the shape of your belly has anything to do with the gender of the baby! Each pregnancy is simply different as is every baby!
Hope this helps, and God bless!