Fever, headache, weakness. Blood taste?

Hi Doctor! Last Sunday, a got little itching in my throat and in the next day morning, I had fever, bodyache. Now that day around 3 am I got around 103 temperature and had a Calpol 500 and slept. Next day I visited Doctor and he gave me antibiotics and Calpol650. He asked me to had total of 15 antibiotics but after taking those I got too many side effects like couldn't sleep, had diahorria, lost my appetite etc. So after taking 7 pills, I stopped. My fever got better on Wednesday evening. But after Wednesday and  till today I have severe weakness, having dry cough, urge to sleep all day long, have light headedness, numbness in the head, sometimes head spinning and my skin looks so much pale! Do I need to be worried? This weakness is lasting very longer. Do I need to do a blood taste?