Fear of dying anxiety, can’t sleep and feel depressed. What should I do?

I had a massive panic attack 5 days ago and ever since I’ve been feeling panic attack symptoms & by the end of the day I start to feel really depressed like I’m gonna go to sleep and not wake up. I feel like today was my last day. I go through my day thinking, is this the last time I’ll ever get to do this? I just feel like I’m dying. 

I’m 22, haven’t been active or eating healthy in past year, and I only got my panic attack after repeatedly thinking “why have I been eating so unhealthy and inactive, what if I develop a heart condition” an hour after I had eaten 4 pizza slices. 

I’m so scarred and feel really weak and vulnerable. I’ve never felt this way in my life..

You triggered it, just try to relax and try not to think of it, negative thoughts gives us anxiety, I'm not new to this I've had anxiety disorder before, it goes away just don't stop eating , you can eat healthy if you want, search foods for anxiety and depression , eat juices and water , and you can eat junk food every once in a while

I triggered my anxiety again few months ago cause I thought I had a tumor,now I'm dealing with this again too. I'm on sertraline now, and when I was a teenager I bet it naturally

I would say educate yourself more ..  up it could backfire 

i was in the medical profession, but after some years I switched out... I couldn’t deal with some aspects.

Take the heart... it’s crazy resilient.

family history is a factor.

cholesterol is sort of a factor

diabetes is one

diet is but not largely... takes decades of stupid eating

exercize matters but simple walking does good

Stress - is a low factor, one needs some of the above factors for stress to affect the heart

Even those in the above rarely get a heart attack.

Heart palpitations mean nothing ,., it’s a response from stress from a nerve and simply sends or inhibits a beat signal.

You MuST trust your body

My doom fears began at age 19... fear of death since age 6.  

Control can be the source of it all.  I Hate not being in control!

as for death control .,, Revelation 21:3, 4 / John 5:28, 29 

thats all I can say ... it’s beautiful... no man can resolve death.

When I learned that ... I was anxious free for nearly 20 years ,,, but life will toss in new fears... but education and mindfulness meditation helps.