Private healthcare symptoms and conditions

Hi all! I have recently started to have a very strange feeling and thought I would post here to see if anyone else can elaborate on it.

I switched from private healthcare to the VA system in March 2008 and the MD at the VA immediately switched me from Toprol XL 100mg per day to Norvasc ( Amlodipine Besylate) 5mg, a generic version and from Zetia 10mg to Zocor. This is mainly due to the fact that the VA does not have the Toprol XL or the Zetia in their pharmacy.

I am a very active person, work out 3 times per week, play tournament level racquetball and generally stay very active. I was feeling fine on this medication for almost 3 years with the only side effect being a little light-headed feeling with hard physical activity. Approximately 2-3 weeks after changing meds I started to get this lumpy feeling in my chest and then it started to progress into an air hunger feeling which felt like my breath was being taken away for a split second. I called the MD at the VA and requested to go back on metoprolol tartrate, which is what the VA has in place of the metoprolol succinate (Toprol XL). The air gasp feeling has only gotten worse and with any excertion I become tired now and start to get the gaspy feeling. Very scary. When it started to get real bad one evening I called 911 and went to the emergency room. Tests came back "ridiculously normal" the ER MD stated. Went back to the VA and the same MD, who doesn't listen, says I am under stress and prescribed me Paxil. I am completely lost as to what to do. I am going in to have another EKG and a holter monitor put on as well as a stress test.

Does anyone have any advice for me? I am desperate to get this resolved as fast as I can. Feel terrible lately and the MD doesn't seem to be listening to me.

Help!