The last two days my lower eyelid has been swollen. i put a cold compress on it & when i wake up in the morning it's even more swollen. what is this?

Blepharitis: You have something called blepharitis. This is most likely caused by a bacterial infection, though non-infectious causes also exist. Continue doing the warm compresses, and keep the eyelids clean of any crusting. Probably also need to treat with an antibiotic, and thus should see your doctor, especially since this is getting worse. Avoid eye makeup and contacts, if you wear them.