Very pain at left upper side of stomach.

Hi sir greetings, hope you are doing well,I am Masud 21 years old. I am student. I have been feeling very pain left upper side of my stomach for the last week's , day by day it's getting bad . I had the same feeling before 2 years , I didn't see a doctor or specialist, I thought it's stomach problem or lacking of water, now I think it's turning into something bad . Sometimes I feel trouble to take breathe , such like very quick breathing, and seems like my lung is not working properly, sometimes I feel my throat is drying, if I make late to drink water I can't breathe seems like it's going to stop , and most of the time I feel breathing problem Please help me to find out the correct reason Regards