Wisdom tooth hurts and possibly impacted, but no insurace?

No insurance. Start by seeing if the tooth needs to come out at this time, if treatment can be temporarily postponed, or possible not removed at all. If it needs to be removed, find out the cost, as well as possible payment options (such as carecredit or the citihealthcard). Dental school or hospital based dental residency programs offer reduced fees. Otherwise start saving or bite the bullet and prioritize $.
Dental School. Make an appointment at your local dental school. They may be able to treat you with a reduced fee schedule. Extraction may be needed.
Meds. Dental Society. Take OTC meds. Contact local dental society about options for low income patients. For best results with wisdom teeth, make sure you are evaluated and treated by a board certified oral & maxillofacial surgeon.