You are suffering from acute conjunctivitis
in your left eye. You should take hot fomentation 3 times a day, use some anti-biotic eye drops locally 2 hourly and anti-biotic ointment at night. When you get up in morning, you should clean your eye with warm water with clean hands and boiled cotton. This should help you in 48 to 72 hours.
The problem of acute conjunctivitis is generally not associated with hypo-thyroidism.