It all started lying down right after work 5 months ago. My life has changed ever since. I have palpitations and extreme worries of having a cardiac event. I have a family history of heart disease. I'm 23m, weigh 155 lbs. Lost 30 lbs in 3 months before I got the panic attack. 

Went to the ER, Cardiologist for a echocardiogram, ekg monitor, x-ray and now I'm broke and am not comfortable exercising because I was short of breath.

I'm taking magnesium and Metoprolol and it's helped with the symptoms for a tad moment but now I get chest tightness. 

Don't know how to keep going. I just want this 'cardiac event' to happen already and get a IED implant on my chest. I think that's the only option I have or die in my sleep.