I've heard of the ginger tea for helping with the nausea. The bracelet sounds strange, although I've heard of a "sailor's bracelet" that, when worn correctly, pushes on a spot just inside the wrist that happens to coincide with one of the accupressure points known for helping relieve nausea caused by motion sickness.

Ask your Oncologist about Zofran, a very powerful anti-nausea medicine that is often given/prescribed to chemo/radiation patients. Just in case the nausea can't be controlled by ginger tea.