Tinnitus Causes and Symptoms

I've been suffering from tinnitus now for over two years. It came about in 2004 after a period of having wax blockage in my ears. I made a couple of ill advised cleaning attempts using cotton buds, not being aware of the risks at that time. Eventually I went for syringing after trying to alleviate the wax using olive oil drops.

The tinnitus began about a week before the syringing and continues to this day. It is predominantly a high pitched whine, and seems to be equally present in both ears. I also get a rhythmical rushing sound in my ears particularly when standing up after being seated for a while, or when bending over (seems to be linked to blood pressure shifts?). Then there are the occasional high-pitched 'ping' sounds that begin loud and fade away over a few seconds and sometimes my hearing will seem to become muffled in one ear, again only for a few seconds before clearing.

I have suffered for the last two years with lots of head sensations, including light headedness and general fatigue in my neck and head, but never any spinning vertigo. These particular symptoms have been put down to anxiety so may not be related to the tinnitus.

To date I have had numerous doctor appointments and have seen an ENT, and while they have given me various explanations as to the head sensations nobody has given me any explanation for the tinnitus. So my question, is it likely that I caused some kind of damage to my ears that has resulted in the tinnitus? I was never a fan of rock concerts and I don't work in a noisy environment so I don't believe that noise damage can be a factor.

Your thoughts would me most appreciated.