Pink eye is generally a viral illness but after looking at your history a bacterial cause seems more likely. Polysporin
was a good drug in the initial days but now a days it does not have the desired effect.
I would advice you to seek an ophthalmologists's help as bacterial conjuntivits does need close monitoring in one trained to do so.
In the meanwhile I would advise you to take some simple hygiene precautions like -
1. sleep on the side of the worse eye
2. keep your hankies, towels etc seperate from others
3. touch the eyes as minimum as possible
4. was your hands with soap and water whenever they come in contact with the eyes
Hope you get better soon.