I feel bleh

I'm stuck in college and I feel bleh. I'm really really tired, I keep going dizzy, I'm too warm (I had to go sit outside earlier), I'm too cold (I'm sat in the warmest room in the building), I feel sick, my brain is working really slow, and I want to cry for no reason XD I've done everything I usually do when I feel ill (salt, mints, drink) but they aren't really working. I could go home but I might have a test next period and it's history which I enjoy and it's my last lesson of the day and I don't want to have to catch up with more work. It's also going to take like 2 hours to get home but if I wait until the end of the day, I'll be with my girlfriend for like an hour of it. I just really want to go to sleep but none of my friends are here with me and I don't want to miss my next lesson so yeah :/