HI, thanks for using healthcare magic
The ear drum can sometimes rupture as a result of trauma.
Normally a ruptured ear drum can be seen on physical examination of the ear and your doctor should have been able to determine if this was the case.
The use of the drops would suggest that no rupture was seen when you were assessed.
If you remain unsure that you can consider either revisiting your doctor for a recheck or having a second opinion
I hope this helps