Hi kat...I had a radical in August and then had radio in October for 1B. I anticipated the worst, but it was fine really...a little bowel urgency, but no diarrhoea. They give you Imodium for any loose bowels you may have. I also had some nausea, but they gave me tablets for that. The worst part for me were the vaginal sores, but they only happened at the very end and lasted a few days. It really wasn't terrible, you'll be fine! I wanted to ensure I was in the best physical shape before starting the radio, so I walked, walked, walked for the weeks leading up to starting and I feel this really helped, as a week after it finished I was down the gym!