Tess, sorry you and your husband have to go through all this. Both radiation and chemo can make the patient tired all the time and to be nauseous. Does your husband have medication for nausea? Also, radiation continues to work weeks after completion of the treatment, so he will feel the effects for a while.
Mky wife has a port and it has been wonderful. She has hard to get at veins, too.
Hang in there. Don