I am hearing buzzing, humming sound in silence. Is this problem with my ear or its progress in meditation?

1. I was practice Breath Meditation then OM Chanting Meditation from year. and finally leave these both because its not suite for me. 2. Then I start Sound Meditation where I try to listen sound of my heart or other subtle sound. Last week I sit in meditation, after 2 minutes I hear sound like buzzing, hissing, humming. 3. from that day its continuously buzzing in my ear. Its > Tinnitus or > Sound of Silence?