Runner, you have to be careful with natural remedies. Some things are actually going to interact poorly with your chemo. While you are undergoing chemo, try to avoid anti-oxidant rich foods. Most chemotherapy is an oxidization treatment, so consuming antioxidants is counteractive to it.
I would drink some chamomile tea with some lemon if you're out of ginger. Oatmeal can also be good, just don't add too many flavors to it. Try to focus on eating basic foods like grains, and avoid acids, sugars, salts, spicy and fats. (All the nice things. ;_; ..) Lean meats are also good like chicken and rabbit. Chicken soup can be a great meal for when you're sick. Grain noodles, vegetables and chicken in a light broth can be just right.
Mint can also help. My mom liked chewing mint gum. Smelling mint tea can also help.
Get fresh air and also try not to curl up and compress your stomach after meals.
I've also heard that fennel and anise can be good.