Welcome in H.C.M. for consulting your query.
I have gone through your query regarding painless bleeding from left ear. though bleeding was quite less but the possible reasons of painless bleeding ear are-
(2) Bleeding disorders.
(3) Thalessemia & sickle cell anaemia
These can be diagnose by blood examination like -
(2) Prothrombin Time
(3) B.T., C.T.
After proper diagnosis treatment may be planed.