you must consult the dentist
who removed your teeth. the pain does not lasts so long. and the wounds heal up in 2-3 weeks if the general health of the patient is good.
pain after 3 weeks can be a cause of concern so you mus not delay further and visit your local dentist to rule out the cause of this pain. I hope that the teeth were removed in toto (complete).
If you extractions were traumatic you may still have some pain.