This can be A case of viral conjunctivitis or allergic conjunctivitis. In viral conjunctivitis the symptoms like redness,watering, itching will increase over next few days and would then subside with medications. Also need to mention if there is any associated watery or mucoid discharge from the eye. I would recommend you to start lotepred eye drop 3 times a day for a week then taper it as twice a day and then once a day for subsequent weeks.
Next Steps
video consultation if symptoms do not resolve in 5-7 days.