Burning Outside

Assalamualikum..

alhamdulillah, praise to Allah to give me one more day to live..

I think I have a symptom which make me feel burning outside.. and i fell so thirsty inside.. I really dont know what is wrong whit me.. But it feels burn outside, my skin is so hot and like someone put fire on me..

since i lived in University apartment which my room facing the sun in the evening, so when the night comes, my room will become so hot.. in addition my body can received all the heat and i get so thirsty, my body will burning from inside and outside.. i don't know why.. and right now, even in the workplace with air condition is on 18 degree's, i still feel hot from outside.. i mean what is wrong with me..