for 6 years i found increasing moles and freckles and i was told its part of ageing and can happen at any age but i was told it happens to everyone at some stage of life - i have a mole like you say at my ear and i was told i simply had lovely ears and not to worry about moles - particularly at my age (24) the only time to worry about moles is if you have dark patches throughout your skin and they get much bigger - however a visit to your GP will diagnose it 100% accurately, if your doc says there is nothing to worry about then he/she is right. Please trust them. they see these problems everyday!