hello
the
numbness and bleeding from nose may have occured because of the posterior superior alveolar
nerve block which would have been given for
root canal and the needle would have punctured some blood vesels.NOW that the problem did not last for many days so no worries
as far as your present pain is concerned , it may be due to two things
1.your root canal tooth still is infected , for that you may go for a radiograph and have it checked
2.the 2nd most probable cause may be that the nerve block that was given may have resulted in haemotoma formation due to puncture of pterygoid plexus of vains
so what i would adivise to relieve your pain is to take following medication
1.clavum 625 mg twice daily for 5 days
2.any painkiller twice daily for 5 days
3.omancortil 10 mg twice daily
4.luke warm saline rinses followed by
cold pack on the cheek from outside for 6-8 times daily
hope this helps