Hi. I am a 28 year old female, non smoker, do not drink. I was prescribed zoloft for anxiety and after taking it I began having episodes of my heart racing and pounding, these episodes would wakemeup throughout the night. I wore an holter moniter and I had an episode of a racing heart, but the cardiologist said that he saw nothing out of the ordinary. My question is, would a cardiologist be able to detect if my racing heart was svt? Also, after stopping the zoloft, I have not had an episode but I have had some palpitations after eating or while nervous. I have high anxiety from the fear of what my heart did while I was on zoloft. I have also had a stress echo done and a 2 d echo. The stress echo was normal, but I won't know the results of my 2 d echo until tomorrow. The 2 d echo was ordered after my doctor heard a murmur. He said that he wasn't at all.concerned about it and that it sounded like a physicological murmur. He is a cardiologist.