Hello and welcome Mr. Chenson,
sir first of all I want to assure you that symptoms you are feeling are not of any direct indication of infection. To rule out any thing the information is slight incomplete.
this may be a muscle spasm due injection given to you while extraction, or if removed tooth was wisdom tooth the pain may be referred one. In that case no need to worry simple painkiller like FLEXON-MR & warm saline rinses will help you.
secondly weather the tooth was in upper jaw or in lower jaw and after how many days after extraction you start feeling pain.
and the last if you feel any rise in temperature or swelling at the site of removed tooth then this is remaining infection & you have to visit your dentist