My big toenail on my left foot has been hurting off and on for about a year. I've squeezed pus out of it. I have an ingrown toenail? Any options, other than surgery?

Ingrown. This is one of those things that surgical resection is the option . It will make the problem go away and make you feel better. See your podiatrist - you won't regret it !
Podiatry. I would encourage you to get up the courage to see your podiatrist. If there are fragments of nail growing into your skin - the infection will continue. The procedure for an ingrown toe nail is really not that bad. What if you develop cellulitis or the infection travels in your body?
Likely. An ingrown nail. Very simple in office can take care of it. See a podiatrist, you will be happy you did.