Hi. Last night my eyes my right eye suddenly kept watering all night, turned red and a red half circle around the cornea. I ve also had bad neck pain, headache and pain behind my eyes. I don t use contacts. It happened suddenly, thought it was allergies but the eye pain, redness neck pain & severe headaches continued today. I had some Erythromycin ointment so I put that in my eyes last night. Eye was less red this morning as the day went on both eyes turned red and the eye, neck pain & headache have gotten worse.