Thanks everyone for your help! I did call the Oncology nurse today who said to keep taking the Emexalon 3 times a day for the next few days and I am still on the steroids too. Apparently I should hear from them in a couple of days anyway to check on me and work out whether to change my pre-med and medication dose next round and was told it's important to tell my oncologist in my next clinic appointment
I do feel a little better today, am drinking HEAPS of water and ginger tea and snacking on ginger biscuits. Finding eating little and often seems to keep it at bay a bit more and I haven't had as many waves of crippling nausea today. I just hope I can get control of it a bit more now!