cardiac arrhythmia during onset of MDMA

[NervousFlower]

Hello all

I am an experienced user of E and have been able to enjoy it for many
years without any adverse reactions to it. I dont do it very often, may
be about once every 3 months. During the last two times I used MDMA,

something very disturbing happened : during the onset of the first
dose,I suddenly began to feel my heart skipping beats. This sensation
of sudden irregular heart beat was somewhat intense, so I had to sit or
lay down and try to relax and not to develop a mini panic attack. Aside
from arrhythmia, I felt ok. Then it would pass and everything would
return to normal ,and I would start to enjoy myself. Later in the
night, I redosed a couple of times ( I usually take 3-4 during the
whole night), and felt fine:there were no more irregular heartbeats.
After that night I became somewhat concerned with my heart and went to
a doctor. They did cardio tests and said everything was fine.

Did this happen to any of you and do you have any idea why? Could the
arrhythmia be psychologically induced, due to being stressed and
agitated during MDMA onset, but then it went away after redosing
because I relaxed? Or may be E is becoming a threat to my heart?

Any feedback will be greatly appreciated....