It's probably nothing, maybe just allergies. Just pick up the phone and make an appt with an optometrist. They will be able to tell you right away if something isn't right, and this will ease your mind. If you don't have insurance, don't worry. Just tell them when you make the appointment and they will tell you how much it will cost without it. Most likely not over $100. I know it sucks if you don't have insurance, but what's $100 for your sanity? You will be fine.