[It's urgent] I'm worried whether this is a heart arrhythmia or not... it's a bit scary.

Since a month ago, during sleep at night, I suddenly feel chest tightness with clear symptoms.

I experience 1 to 3 episodes of waking up in terror as if I am about to die.

I think I wake up because I feel my heart beating irregularly.

Even now, my heart beats in the mid to late 50s per minute.

Sometimes in the 60s. Recently, I have been feeling a slight dull ache in my left chest intermittently throughout the day.

For your reference, I am an adult in my 30s. Recently, I have been experiencing a lot of stress over the past month, which has affected my sleep.

I experienced symptoms like blood rushing to my head and numbness at the back left side of my head due to stress.

I'm currently not feeling as stressed, but do I need to go to the hospital?

I keep waking up 2 to 3 times every night feeling chest discomfort (arrhythmia?), and it's been happening continuously, so I'm afraid to sleep.

For your reference, I am currently taking medication prescribed by a psychiatrist because I have trouble sleeping.

Due to the sedative effect, I wake up multiple times because of chest discomfort (a feeling of something happening), and I can't achieve deep sleep.