Weird syptoms what might be the cause?

I've been feeling slightly sick all day today and I had to work. sure enough the air conditioning at my job is broken down and I do lots of heavy lifting and hard work. Needless to say I was very hot and sweaty plus sick to my stomach. I drank lots of water/poweraid/gatoraid and different liquids but I had a hard time eating becuase of my stomach. I ended up just getting a 1/4 pound of pastami and eating that for lunch but I didnt eat breakfast. I reached about 95 inside my works warehouse CIm the recievier for Longs and have to ware the uniform aswell which doesn't breathe very well. by the end of the day I was exhausted, I went home slept alittle then ate a small diner. Now Im felling like someone is sitting on my chest and you know the way your leg feels when it falls asleep? I have that over my entire body and face its scary. I can berly heep my eyes open becuase of it.