Hi. My Left Eye Seems To Be Infected. It's Very

Hi. My left eye seems to be infected. It's very red and puffy. And crust seems to be forming around the outside perimeter. I tried eye drops which took away the red, but only momentarily. It doesn't hurt but seems to water frequently. I have been swimming a lot lately (everyday over the Labor Day holiday weekend). Could it be the chemicals in the chlorine. The symptoms only started yesterday. What could it be?