Suggest Treatment For Foot Pain

hi ive been to a doctor due to foot pain and he told me to take neurofen and it didnt work so i went to my doctor as he was on holiday before and he told me to try neurofen again and see how it goes and come back in a couple of weeks however t was still bad. so i went back and he prescribed me dicloflex for tendonitis however i'm suffering all the side effects loss of appetite feeling sick dizzy headache etc should i stop taking them or do u think it is best if i went back to see my doctor?? i hope he doesnt think im stange going loads of times ?? please help asap thanks