Ok...I am trying to find a way to say this delicately, but sweetie...this is just the beginning.
If I remember correctly you are about 8 weeks? It is a lot of work to make a baby and your body is adjusting accordingly. The best line of defense is to find what works for YOU. So if you need to lie down in order to feel better do that. EveryBODY is different, just as every baby is different. Like I mentioned in a previous post the smell of mint and the taste of mint soothed my tummy, but a good girlfriend of mine could only stomach Dr. Pepper and Snickers Candy Bars. Another of my girlfriends could only drink fruit punch flavored Gatorade, no other flavor. Too funny, but like I said everyone is different. Find what works for you. Sometimes the least obvious things are what works the best.
Whenever I felt that yucky tummy I always wondered how something smaller than a grain of rice could make you feel so miserable.
But...the end result is SO worth it. Stay strong and find what works for YOU!