Personally, I think it could be pinkeye. (And if you're wondering, no one farted or pooped in my eye--it just happened all of a sudden with a feeling of something in my eye) I had the same symptoms you did (especially the rheum being all across the eyelid) and finally went to see a doctor. He told me it was pinkeye and gave me medications to fight it.
But I'll echo what people have said here--go see a doctor.
"Words aren't the only thing that tell people what you're thinking..." ~Tifa Lockhart, "Final Fantasy VII"
DN: Advenna|| RH: Cellanta || Elsword: Cippria || ST: Advenna