<s>[INST] Yes I woke up Sat morning with horrible pain in back and chest.  I couldn’t lay walk nor sit.  After an hour screaming in pain I took a hot bath and a Advil which didn’t get rid of pain but made it bareable   Finally I dozed off  but having chills and sickness at my stomach and some pain sat evening. I had my daughter to massage my back to help me. Yesterday just chills and weakness and sick at stomach.  Today chills and jabbing pain from time to time around my right rib but not under it. Also weakness and sick to stomach [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. The backache with chest pain and chills can be related to a muscle spasm- may be related to muscle sprain or a viral infection or electrolyte imbalance caused by decreased fluid intake. I hope this information has been helpful for you. Regards, Dr. Praveen Tayal </s>