I wonder if there is a nasty flu going round I also feel like that aching , coughing, itchy throat , just wacked out,
Book an appointment to see your doctor to see if he can give you anything stronger than a paracetamol etc to make you better and to make sure its nothing serious. Drink water and eat healthy as you don't want any fast foods or any bad types of foods irritating your stomach. Also try to get some sleep and relax when ever you can.