AlbertCampion - all chemo is different, but I found the day of chemo was always ok (especially once they'd sorted out the anti-sickness and steroids) - I just felt a bit tired and spaced out a bit. For the 2 days afterwards, I was still taking steroids and anti-sickness sickness meds, which I think is pretty standard, and again felt ok (if anything I was perky from the steroids and found it hard to sleep). The side effects (for me they were fatigue and mouth ulcers, plus "dire rear" mainly) then kicked in on day 3-4 after chemo. I remember in my first cycle I felt pretty ropey for a few days, but then bounced back and probably had about 12 days of feeling pretty normal until the next dose. I have to say, the start of side effects was pretty much clockwork, so 3-4 days after each dose, they would start kicking in. As I went along, the time to bounce back increased, so I had less and less good days between cycles as the drugs and effects build up in your system - BUT not everyone has this. I was unlucky, as i picked up so many infections, and was admitted to hospital every cycle - sometimes more than once. But again, that's not typical - i was just really unlucky!
I will say, make sure you religiously take your temperature every morning and evening, more often if you feel unwell. If it hits 37.5 and above, phone your emergency number asap. Because i did that, it meant i got antibiotics and treatment very quickly and prevented a worse, longer infection. It's much, much better to get treatment quickly, as we go downhill very quickly when we pick up infections, as your body can't fight back. Most of the time, when i phoned the Christie helpline, i was admitted to their ward. If it was after 11pm they would direct me to A&E. I was seen at A&E multiple times and as soon as i told reception i was a cancer patient and on chemo, and had been sent by the helpline, i was isolated, assessed immediately and put in my own room on antibiotics straight away (before they even did blood tests!). It's really important to get seen quickly.
Oh, and a good tip is to always have a hospital bag packed and take it with you! Just in case!