I was sooooo nauseous from 6 weeks until about 9 weeks. I never threw up, but I was miserably nauseous from the time I woke up until I went to sleep. I tried sea bands, preggie pops, saltines, you name it I tried it. And then BAM, I woke up at 9 weeks and it was gone, I felt wonderful, like a new woman. Cue freak out! I was so upset, I actually missed the nausea, I wanted it back because it made me feel safe in this pregnancy.
Anywho, needless to say everything was fine. I am now almost 39 weeks with a healthy babe growing!! I have not had nausea again since that day I woke up at 9 weeks. So, try not to stress. A lot easier said than done I know, but everyone is different. I guess my body just adjusted to the baby, and I have been relatively symptom free since 9 weeks. I Can't complain.
Good Luck to you!