Pink eye or dryness??

La
Yesterday I woke up and my left eye was hurting and red. I took my contacts out and put eye drops for redness in them. My left eye was sore all day and watering. This morning I woke up..no gunk, not hurting anymore, and it was never swollen. It doesn't itch, either. It's just red. Should I wait a few days to let it clear up? It's still a little watery but doesn't hurt. I don't wait to pay my copay if it's just allergies/dryness and not an infection.