Conjunctivitis (Pinkeye)

I had encounter pain in my right eye a few days ago which i thought it was Conjunctivitis but after made a few research,... it was just a bacteria infection. As Conjunctivitis will make the eyes red so i don't think that what i had is that.
Below is the facts about Conjunctivitis or what people call Pink eye.

Conjunctivitis, commonly known as pinkeye, is an inflammation of the conjunctiva, the clear membrane that covers the white part of the eye and the inner surface of the eyelids.
While pinkeye can be alarming because it may make the eyes extremely red and can spread rapidly, it's a fairly common condition and usually causes no long-term eye or vision damage. But if your child shows symptoms of pinkeye, it's important to see a doctor. Some kinds of pinkeye go away on their own, but other types require treatment.
Causes - Pinkeye can be caused by many of the bacteria and viruses responsible for colds and other infections, — including ear infections, sinus infections, and sore throats — and by the same types of bacteria that cause the sexually transmitted diseases (STDs) chlamydia and gonorrhea.
Pinkeye also can be caused by allergies. These cases tend to happen more frequently among kids who also have other allergic conditions, such as hay fever. Triggers of allergic conjunctivitis include grass, ragweed pollen, animal dander, and dust mites.
Sometimes a substance in the environment can irritate the eyes and cause pinkeye; for example, chemicals (such as chlorine and soaps) and air pollutants (such as smoke and fumes).