I had 5 stents put into my LAD in Sept 09 and there was discomfort in my chest from this for around 3 months, plus some strange sensations like a heart twitch. The other day I had 2 stents put into my circumflex and this is causing pain in my throat, chest and back. The cardiologist said around 50% of patients experience this when the artery is stretched by ballooning but it does eventually pass. You have to drink plenty of fluids.