My 6 month old euro dobie has been having super red eyes for a while now and sometimes her 3rd eyelid covers a lot of her eyes. We have a vet appointment at the end of the week but when we previously took her they just said use drops which we did and nothing has changed. She doesn’t seem irritated but they look very sore. She gets white gunk in them in the morning (not green). Could be conjunctivitis or could be something worse. Appreciate your thoughts!