Good shampoo to help with morning sickness?

Rachel • Expecting our rainbow baby in january
I just bought giant bottles of biolague and the smell is amazing... But now I associate the smell with my nausea. Not amazing. The only thing that I can do to help my nausea is lavender. But since lavender is rumored to up the risk of miscarriage and I have already had 2, I need new suggestions. 
No cheap grocery store ideas.