My history is this - I am in 4th stage bone cancer from breast cancer. I take a hormone suppressant daily and take a Zometa infusion every four weeks. I generally feel fine for my age. I'm 62. Lately I've been having some dull pains on the right side down low. And sometimes that same pain would be on my left side. Today I've been having a sharp pain on the right side (same area). I don't have a GP at this time. I take my treatments at my Medical Oncologists office and see my Radiation Oncologist every four to six months just for follow-up. My next PET scan is scheduled for January 2014. The last one looked OK considering I have over 100 tumors from the base of my skull down to my hips and pelvis. I normally feel OK. Is this pain something I should go to the ER about or should I try to find a GP tomorrow or an Urgent Care facility to check this out? I have been putting off finding a GP because I will be changing my Medicare plan in the next month since I'm not happy with the one I have. Thank you for your suggestions.