The mind-body deal is for real. Palps/arrhythmias/abnormal heart beats are common. I think more so among healthy young people, than healthy older people. I had arrhythmias when I was young, but the doc told me not to worry about them. This man delivered me, so I had been seeing him for awhile, and trusted his word like the All Mighty :) I didn't worry at all. I was around 24 or 25 then.
I have arrhythmias now (53 years young) because of all the caths I have had done. No one has to tell me this. It is one of the possible complications. I see a doctor regularly and if it were to show up on an EKG (very rare) it could be something else causing them.
I have not read your previous post(s), but you are with child and should go directly to your doctor and demand that he refer you to a cardiologist. There are many women who have problems with their heart during this time. You must know that some women have cardiomyopathy due to child birth. I think that many of them recover to live normal lives.
You need to wear a 24 hour Holter monitor, to record any abnormal heart rhythms. You can wear them for longer than 24 hours, lol. Forgive me if your previous post(s) mentioned that you have done this already.
See you doctor soon :)