Hi,
Your wisdom tooth might be impacted, i.e stuck inside the jaws. Since you gave history of almost a year its not out yet and you are sufferring from constant pains . For a temporary relief you can take medications . Keep the area clean. Rinse with warm water and salt atleast 4 to 5 times a day. Betadine or chlorhexmouth wash can also be used.
Next Steps
permanent solution would be getting it examined by a dentist who would suggest to go for an xray (panoromic ) prefferably. so that exact position of the teeth in jaws can be seen and hence the better treatment plan can be formulated. If the teeth is impacted ideally one should go for its removal ( the teeth has no functionality in mouth ) so removal wont need for replacement of teeth. If the teeth is not impacted we can wait and watch.
Health Tips
if the teeth is in a bad position it can also effect the nearby teeth in long run and lead to decay / pain and further progress of it.