odd sensations in chest after stent placement

I had a stint procedure on 11/13/09 and since then I've experienced shortness of breath, pain in my chest and arms and hesitation in my heart rymthn. It happens no matter what I'm doing. If someone can help me understand this and if it's normal, cause it scares the heck out of me.

I am 45 years and had 2 stents placed in the LAD (end to end) back in May, 2009. Within 3 months I felt like I had had nothing done. I became sedentery again because everything would give me chest pains and I refused to take the Nitroglyerin pills because I've seen what a mess it made of my father when he would take it (he's got heart failure and is close to 80.)

After going for another stress test, this one drug induced and extremely painful, the abnormal results were reported to my cardiologist who diagnosed the possibility of the ends of the stent having narrowed (which can happen) and another catherization was scheduled at the end of September.

When they went in they found out different. It seems that I had developed another 99% blockage in a smaller artery which had previously been only 40% blocked. The Cardiologist states this sometimes happens to a very small percentage of patients (12%) where due to inflammation the plaque buildup goes at super speed, so what should have taken years to close, only took months.

Well it's been a month and I'm starting to have the same symptoms again. I'm not at the painful level yet, just the beginnings, discomfort and sometimes its hard to breath, although the breathing part can happen at anytime and is not related to my activity level.

I've got to tell you I am frustrated. I'm not sure why it's happening again, and some of the symptoms I've had my cardiologist has stated, "can't be happening" she stops short of telling me its all in my head. Like it feels like a pencil tip is poking me in the chest on the left hand side - stuff like that. She keeps telling me there are no nerves there and I shouldn't be feeling the stents. Seems to me if I'm feeling it and others are reporting something of the same then maybe it's actually happening.