Hi welcome to Health care magic forum,
Small pin hole in ear drum or external ear ?? I think question is incompelte.
If it is after ear piercing than just remove the stud and put a thread .
Take a milder antibiotic ointment over it and take paracetamol
500 mg once daily for 2 days .
If hole in the drum after a cold
or trauma or infection than take antimicrobial antibiotic ear drop
2 drop 3 times daily. you can take paracetamol course too for 2 days.
If no relief than see an ENT specialist
for further evaluation.