Molly I was only allowed to take the Steroid for 2 days only after each infusion, to be honest that wasnt the clincher in terms of helping me at all, whether I had that or not. Im not sure if you can have it for longer or not. Honestly I tried everything for Nausea it was relentless, in the end Ativan was the only thing that well it actually put me to sleep, I still felt nauseas but not as bad if that makes sense? so I continued with that through FEC its the only thing that got me through. Be really open over communicate to your team, give them a call tomorrow and see what they say? the more they know, the more they can rejig your meds to try and help! Feeling for you!! its rough!! Hugs Melinda xo