In my opinion you are suffering from a viral fever with viral myalgia and it may not related to any environmental changes. You are having fever and cold and body pains and do not neglect the symptoms try to get the correct treatment especially during this Pandemic disease of coronavirus. Try to contact me online and I will along along with the treatment

It can be because of the climate change.. monitor your symptoms..Drink plenty of fluids, steam inhalation,salt water gargling, avoid cold food and drinks, avoid stress and tensions,sleep minimum 8 hours at night, monitor temperature and oxygen levels 6th hourly once.. if any alarming symptoms inform the health authorities nearby.