Hello Lybrate user, wisdom tooth are mostly notorious and horizontally impacted like your case will always cause trouble. So the best treatment is always extraction. At present you have pain
so I will suggest you to have a course of antibiotic and antibacterial mouthwash as prescribed by your dentist
. Also try to keep that particular area clean. Lukewarm saline rinse is very helpful in such cases. As soon as the pain and swelling subsides take an opg (x-ray of loer and upper jaw) and find a oral maxillofacial surgeon (specialist for extraction of such cases) and let him remove the concerned tooth. Hope this helps.