Have you spoken to your doctor about this? You may just be particularly sensitive to the chemo, but there may be something your doctor can do.
Also, you mentioned nausea...are they treating you aggressively with anti-nausea meds? You should be getting IV zofran before the chemo, and then the pill form of zofran, one a day for at least 3 days after chemo. Also, the night of chemo you may need compazine.
There are some other anti-nausea meds, unfortunately I don't remember the names, but you definitely should try something else if one doesn't work. But the key here is preventing the nausea in the first place, if at all possible.