Like you say everybody is different. I had 5 chemo, 28 radio and a 24 hour brachy session. I didn't suffer with any sickness from the chemo at all I was lucky.
The first two weeks the only thing that affected me was the anti sickness tablets I took before and after chemo as they made me so wide awake I couldnt sleep on chemo nights. I learned from this not to drink caffine on my chemo days and to not take the tablets late as otherwise I wouldnt sleep.
The third week I started to feel tired and I suffered from radiation cystitus I mentioned it to my radio nurse and was given bottles of potassium citrate it tasted foul but it did the job!
The fourth week was when I noticed the effect on my bowels and my nurse gave me loperamide. I would sudddenly need the loo without much warning. I made sure I always carried a spare set of clothes and wet wipes just in case!
It's tiring going to the hospital everyday and you get thankful for the weekend breaks. Chemo days for me went by very quickly I took magazines, puzzle books and my laptop and earphones so I could watch bbc i-player and you tube!
The best advice I was given was drink lots of water and eat little and often. I wish you the best of luck do keep us posted on how you are getting on x