<s>[INST] Lately I ve been really tired all the time, and hot and then cold , and then hot and then cold. Then sometimes I feel like I m burning up but freezing at the same time. But my temperature has been normal this entire time (Which is 97.9, I run a little lower than normal.) I recently stopped taking my prescribed medications because over the spring I went through a handful of rounds of chemotherapy and I believe that my chemical make up has changed and my medicines aren t working, in fact they just make me worse. I don t really know what my question is I just don t understand why I feel this way. [/INST] Hi, what is the disease you are suffering from?what chemotherapy has been given to you?how long your symptoms persists?  this information needs to be mentioned. What are the medicines did you have stopped? The query carries little information. Anyway chemotherapy can cause features said by you. Also, can be caused by malignancy. Malignancy can be a cause of chronic fatigue. Consult your oncologist. </s>