Every night I have the most horrific nightmares. Last night I dreamed something horrible about cats being tortured and woke up a state. The 'feeling' stays with me for a few hours or sometimes even a whole day of uneasiness.

Also, I often wake to 'sounds' which never happened before. It's like my dream becomes real for a few seconds - the sounds come alive - and then I wake up. Sometimes I wake to music. It's bizarre. If anybody else has experienced this please let me know.

What you describe does sound very much like a panic attack. What was the nature of your accident? You could be suffering from post traumatic stress disorder.

In my experience (I used to suffer from daily panic attacks and agoraphobia) the best treatment for anxiety is to get to the root cause of it, if you can. I heard that so many times but didn't believe it, but it really was true in my case. Have you considered seeing a therapist?