I have terrible morning sickness myself. My doctor prescribed me zofran which is an anti nausea medication that doesn't taste bad and dissolves on your tongue so you can't throw it up. It's helped tremendously!! They also suggested taking vitamin B6 as this also helps with nausea. Those are the only things that have helped and kept me well enough to work. Hope you find something that works for you! :)
I would ask your doctor about it. Nausea and vomiting are very normal for a lot of pregnancies. With my first I lost 16 pounds because of horrible morning sickness. But I would have the stomach pains checked out just to be on the safe side.