jumpingdizzy, no was thinking about hyperacididosis (or any other acid condition)although candida could have been a possibility!!
you can hyperventilate when your body senses a lowering of pH. this helps by getting rid of CO2 which quickly lowers acid levels. increasing acidity can lead to palpitations and dizziness as the pH balance is off and the way the cells react and function is altered and as the heart muscle is the strongest muscle, it is often affected first. acid conditions tent to increase 'contrations' which can lead to muscle cramps, tightness etc whereas an alkaline condition leads to relaxing of muscles etc.
a good indicator of a pH imbalance is chronic candida, itchy arse anus and a stinging wee. when you next get to see a doctor at some stage (!!) ask if you can have a blood, saliva or urine pH test just to be sure but there would be some obvious symptoms which on what you have said are not there.
that was my thoughts on the possible cause of the panic attacks (a friend from uni had panic attacks, couldn't go through supermarket checkouts for some reason, we got a home pH tester some years ago and found her pH was too low so we remedied that and her panic attacks reduced dramatically).
probably best now to see what doc says on the phone and take it from there, but always remember, if you are not happy or comfortable with what is said, ask for a referral or second opinion.
panic attacks usually have a root cause, obvious but not so the cause, many think it is only physiological but panic attacks are often rooted in a mix of physiological AND psychological roots and the catch 22 here is that the stress a panic attack causes can lead to you becoming acidic but the acidity can lead to panic attacks and so on. I referred my friend to a hypnotherapist as well, her panic attacks were rooted in the death of her father when she was young and where he died and the symbolism of it all. she can now go through checkouts without hysterically screaming or falling to the ground in a heap of jelly no worries