I'm making an appointment today.
Thank you,
You need to see an ophthalmologist for a full exam. Could be nothing, but without examining your eyes it would be difficult to comment. Some systemic problems could lead to yellowing of the white of the eye but swelling and redundancy of the conjunctiva (conjunctivochalasis), sun damage (pingueculum), and swelling of the cunjunctiva could also appear as you describe. Get a good eye exam and put the question to rest. You could google image the conditions above to see which you think you have in the meanwhile as you wait for your appointment.
HV