Radiotherapy can cause general side effects, such as feeling sick (nausea) and tiredness (fatigue). It is also likely to make the inside of your oesophagus inflamed. This can cause temporary soreness when you swallow. These side effects can be mild or more difficult. This depends on the dose and length of your radiotherapy treatment.
It is not unusual to feel worse before you start to feel better. This can be a very difficult time. You may feel low or even depressed for a while. Your clinical oncologist can advise you about what to expect and what can help with the side effects.
Once your course of treatment ends, these side effects should improve gradually. But, it is important to tell your doctor if they continue.
Radiotherapy does not make you radioactive. It is perfectly safe for you to be with other people, including children, throughout your treatment.