Best General Physicians in Kansai

This could be triggered by an injured muscle or a cold. Take deep breaths and relax for a few moments, avoiding tasks and movements that cause this pain. If the pain continues, you can apply wet cloths to the affected area in hot weather, or alternatively, you can visit your nearby doctor for consultation

Based on what you have told me like a headache, a sore throat, muscle aches, and a fever it sounds like you might have flu, a viral infection. Antibiotics such as azithromycin won’t help because antibiotics kill bacteria not viruses; therefore they will do nothing for you if this is influenza. The only things to do for now are rest in bed all day with clear liquids (water) to drink while taking painkillers such as aspirin so that one can sleep comfortably through these unpleasant symptoms but should any of them become severe or last more than a week then please seek medical attention as soon as possible.

Sometimes, a fast heart rate can be a sign of sleep apnea or other sleep problems when you are feeling sleepy. Please do go see a sleep specialist for more evaluation and else witness the management of your condition.