I have Non Hodgkins Lymphoma - SLL/CLL, stage 3. Last chemo cycle was in January. Now I am in the wait and see stage. The lymph nodes under my left arm felt enlarged beginning a couple of weeks ago, so I called my oncologist and they moved up my check up appointment from December to next week. Well last week I had lower back pain on the left side, for no apparent reason, but after a couple days it went away. This morning it came back. Could it be a kidney stone or a kidney infection? And if that is the case, could that be why my lymph nodes are enlarged, and not the cancer is growing quickly? I am female, 63, and otherwise in good health.