I felt very sick during the radiotherapy and for a couple of months afterwards. I got some anti nausea meds from the hospital which took the edge off it but it didn’t stop it. 

Thanks for your reply dear. My mom feels the same , sick and a bit pain when I saw the radiation onchologist today I asked him about this , he told me it’s normal and suppose to go away after couple of weeks. Mom also feels like sparking on her armpit and surgical area . I hope she gets well soon. I can’t see her suffering like this , never expected to see my mom sick like this :(

I don’t know if this will help your mom or not but I found massage cream into the area with pain helped. 

We got the cream from nurse also the doctor prescribed it as well , only 3 radiation therapy left ,the nurse said don’t put the cream before radiation therapy . Yes mom said she has pain also feels like burning on that above area . Maybe the cream could help .Thank you for your kind reply :).