Lyn. Exactly. Thanks!
Here's the update. Second cycle went reasonably smoothly. Nausea and vomiting first few days. Found domperidone ineffective. Bigger dose needed as I'm a big bloke but not allowed, so I tried metoclopramide which does provide a higher maximum - up to 5 tablets in my case, though I've never gone above four. At the end of the cycle, my PSA had gone down marginally, so hopefully the flare is over.
Writing this just after a couple of days in hospital following vomiting/diahorrea. Food wouldn't digest and came back as though there was no way through. As this persisted over the weekend, I rang the specialist chemo nurse who hauled me in pronto. Side room in case I was infectious, lots of I/v rehydration and anti-nausea medication. Now fine. Lost a stone!
It seems for me the body's behaviour during a cycle just isn't predictable. More in 21 days.
AC