Radiation treatment side effects

Hi! I’m 24 and have stage 4 pancreatic adenocarcinoma. I have done 16 rounds of FOLFIRINOX and just had scans that show my primary tumor and liver mets are continuing to shrink. I am meeting with a radiation oncologist on Tuesday and am expected to start radiation alongside and a chemo pill by the end of the month. What are some side effects people have experienced and what should I expect?