Your chemo is exactly as mine was,I just didn't say cyclophosphamide! The Dexamethasone is a steroid,that keeps you feeling very energetic and ' normal' for the first few days,and it's also hard to sleep.When you stop taking it,that is when the fatigue creeps in.Like you,I didn't have radiotherapy either.Also,get some Biotene toothpaste and mouthwash from the chemist,and use it obsessively,like EVERY time you eat something.You don't want to get mouth ulcers,and I found this so much better than bicarbonate or salt water rinsing.Cheers Robyn.