remnant infection or muscle pull is suspected.
Welcome to XXXXXXX
I have gone through your query details and the picture posted by you. i can see it is your right lower wisdom tooth that you got extracted surgically.
Extraction of wisdom tooth often ends with complications like pain, swelling and discomfort post extraction .
I suspect your wisdom tooth disimpaction was bony and the extraction was traumatic and time taking, suturing must be done by taking the soft tissue
from the surrounding cheek muscles due to which it has ended in complications.
I suspect it is the muscle pull which is annoying you , consult an oral surgeon and get the muscles pull released which is a simple surgical procedure done under local anesthesia
Upper tooth infected if any is totally a different issue and needs separate treatment and cannot be associated with this.
Further to confirm whether there is any remnant roots or infection in the bone i would advise you to get an OPG radiograph done which will show the entire picture of jaw and helps the surgeon in diagnosis accordingly treatment can be done.
i hope this helps,
If you have further doubts please write back to me .