I'm stressed out ( severe anxiety)

I'm scared i feel my heart stops beating and I'm hurting in chest bad and my heart beat gets real fast and scary?

You are focused on your heart beat so your going to feel it more. Your heart won't stop and the pain in your chest is your anxiety making it that way because you are probably thinking omg I'm going to have a heart attack and my heart is stopping. Basically your freaking yourself out. I know I get the same sensations and it's called palpitations completely normal with anxiety and it's harmless it won't kill you. I can feel mine flutter at times and skip beats all throughout my life and I'm still here. I'm 28 years old now. Try to focus on something else besides your heart and definitely don't google anything! Google will tell you the worst of the worst and make you freak out more lol trust me I know. You will be fine.

I get this too. It's horrible

i thought today i was dying. I'm still here

anxiety is horrible. All day I've had panic attacks and been left with a tight chest. Feeling like i cant breath. It is so scary

Yes I get the tightness too at times sometimes it can last all day with me also and I get the sensation I can breath too and I find myself taking in deep breaths. Anxiety and panic attacks suck big time and a lot of people suffer from it. The dying sensation is the scariest and the worst but it's all part of it because we get that overwhelming feeling of doom. Even though deep down I know I won't die but my mind freaks out and panics and thinks so lol. I'm still here been suffering from this since I was 16 years old. I'm on medication now to help control it and it works wonderfully.

What medication?

Venlafaxine