How Can Foot And Leg Pain With Cancer Recurrence Fear Be Treated?

doc...I am colon cancer survivor.I have undergone colon opration last 2005,a stage 3 cancer.I as a matter of fact I completed chemotheraphy.a year afer I am oprated again, by myoma in the left ovary.after a year other ovary and lastly fibroustic cyst in upper portion of my abdomen..everything goes on smoothly..but almost a year now that I lost weight..due to my hyperthyroid,I don't know if the pain of the palm of my right foot is the effect of the medicine(propiltiuracille,inderal and xanax..now not only my foot,my right leg started to felt pain,,,please help me....I cannot sleep thingking for another cancer,my oncologist that my blood examine is all good thank you so much doc