Congratulations! The nausea, though uncomfortable, is a good indication that your body is doing well in producing the hormones it needs to support your pregnancy! Therefore, it is a good sign...
Now, to manage it. Check out Dr. Brewer's website at www.blueribbonbaby.org There is a ton of information there that it would be good if every pregnant woman knew.
I have 4 children, have had 2 miscarriages, and am in the nausea stage with my 5th baby. The distinctive feature with the 2 miscarriages (at 6 & 8 weeks, respectively) was that the nausea not strong, and then just disappeared. I learned, later, that my hormones just weren't up to the level required to support the pregnancy until the placenta takes over at the beginning of the 2nd trimester. So, nausea can be appreciated...
That said, something CAN be done. Eat. Eat protein. At the first twinge of that "icky feeling" eat something, preferably something high in protein. Protein is what builds muscles and tissues, etc -- basically your baby. Also, your body doesn't use your stores (fat) for the baby; it uses what is flowing around in your blood. That is why you need to eat frequently. And at least in my experience, when the food decreases its flow in the blood, I get nauseous. Therefore, when I eat at the first indication that I am about to get nauseous, even if I don't feel hungry yet, that nauseous feeling goes away and I am okay. That works in later pregnancy for the 'heartburn stage' too.
Small, frequent meals of lots of protein, and salt to taste. A good rule of thumb when hungry or you need to eat: Eat protein, then whole grain and/or vegetable, then fruit, then, if your still hungry and still want the chocolate cake or other sweet, go for it. You will gain weight, but it will be healthy for you and your baby, and you will burn it off breastfeeding and continuing to eat sensibly after the baby is born. (If you have issues with breastfeeding, get in touch with La Leche League www.llli.org They can help you with any breastfeeding issue!)
Also, when you get up at night to go to the bathroom, eat a snack, preferably high in protein, even if you are not hungry or nauseous. My current favorite for 'on the go' is raw sunflower seeds mixed with some raisins. I get the protein in the seeds and the sweet in the fruit, and I am able to remain in peace from the nausea in the morning. If you are not having to get up at night to go bathroom, you need to drink more water. If you are not able to go potty without straining, drink more water - don't strain. I have found this to prevent the morning sickness.
If you get nauseous, eat, and keep eating small amounts until the nausea goes away, then a short while later (maybe 30 minutes?) eat a small amount of something again. At that point, if possible, make yourself eat, but try to think of something that you can at least stomach. It doesn't have to be anything big, just some small amount of something. When I am at this point, often a cup or a glass of milk is all I can handle. But, it is high in protein, and it is liquid, and at that point it is what I need. After that, just keep at it, eating before you get nauseous or at the very first hint that you might be getting nauseous soon, and soon you will be able to eat more comfortably without being disgusted at the very thought, sight, or smell of it, and without it upsetting your stomach.
Also, at this point I will often make something like a bean soup with lots of freshly grated ginger root sauteed with fresh garlic and onion (Lots), and eat with freshly made roti (or you could use whole grain bread or whatever you have or like) (roti (an indian bread) is just whole wheat flour, water, salt, & oil made into a smooth dough, rolled out flat like a tortilla and cooked on a tawa, griddle or skillet). After that, as long as I keep ahead of the nausea, I am pretty much okay. If I get behind, well, you know how it feels...
Hope this helps...