hello and welcome to HCM forum,
I would like to inform you that the extraction socket is still in the healing phase and the sharp edge which you feel with the tongue is the bone and not the tooth, the bone needs to be trimmed by your dentist
. I would advise you to continue taking medication as prescribed by your dentist, to avoid infection.
Kindly start performing warm saline rinses (3-4 times/day),
avoid poking anything into the socket.
Visit your dentist if the socket does not heal in 10 -15 days.
i hope this answer was useful
i wish you good health,