I had a cardiac ablation of the sinus node on Dec 14, 2011, and then a pacemaker insertion on Dec. 30, 2011. When I was discharged from the hospital, I was dx with pericarditis. Sx resolved, but now 5 weeks after pm insertion, I am having intermittent chest pain on the mid to left side, radiating to the neck. Pain increases with deep inspiration, laughter, lying down. Do you think the pericarditis has recurred? Thank you.