Unexplained symptoms

I’ve been having unexplained symptoms a few months after I gave birth

Heart related:

Heart palpitations

Heart contractions (pvcs)

Skipped beats (pacs)

Shortness of breath

Other:

Neck pain and tightness (on one side, right next to my throat)

Electricity feeling in my neck (only at night while I’m about to sleep)

Neck vibration feeling (on the same side)

Could stress do all that? Even though I’ve changed my lifestyle completely?

6 months ago when my symptoms started, I was told by my doctor that it was stress so I started meditating, exercising regularly, eating healthy, drinking water, praying, and ending my day in a relaxed mood but I still wake up some nights with heart palpitations. Could it be high blood pressure? Does high blood pressure even cause any symptoms? Could it be a problem with my nerves? Could my nerves be sending the wrong signals? Could it be a tumor that is releasing hormones? Could I have a hormonal imbalance?

I’ve been to the hospital many times now that I’m about to give up. I know my symptoms are real. I need help, I need suggestions. Which doctor should I see?

I’ve already seen a general practitioner, a medicine specialist, an ENT specialist, and a cardiologist.

My blood count is normal

thyroid is normal

iron levels are normal

liver function is normal

Vitamin b12 is normal

Magnesium is normal

Glucose is normal

Lipids are normal

Calcium is normal

Chest xray: clear

Neck ultrasound: clear