PVCs, Ritalin and Wellbutrin

I'm so glad I've found this forum.  I am hoping I can gain some insight here.

I started developing PVCs when I was pregnant 2 years ago.  I've been to 2 cardiologists and had 2 echos and multiple EKGs.  I was assured that my heart was structurally sound and the PVCs were annoying but not dangerous.  I felt okay with this answer and even though they bothered me, they didn't bother me as much after I saw 2 different cardiologists and got the same answer.

Recently I have been put on Wellbutrin and Ritalin for my depression by my psychiatrist.  I told him about my PVCs and he didn't seem concerned.  Now I am experiencing twice as many PVCs and extreme exhaustion.  My whole chest area feels tight as well.  I have been taking the medication for a few weeks and these symptoms just started.  I like the other benefits of my depression medication so I would rather not go off it it,  but I can't help but feel like I am about to drop dead suddenly of a heart attack (at the risk of sounding dramatic, I know, but it really feels this way).  

Should I just trust that my heart is structurally fine and the PVCs are just normal for me?   I'd hate to go through another round of tests for nothing.  Has anyone had any experience at all with this?

[itdood]

Might be the Ritalin.