I couldn't sleep last night it was about 3 am when I went to bed and I was so scared cause I was thinking I was going to have a heart attack. This morning I woke up and I feel something inside me that I literally feel makes me jolt I hear the sound of me jolting if that makes any sense. Right away I want to go online and look up symptoms cause I'm sooo scared feeling nervous kinda shaky it's the most horrible feeling ever. Everyday it's something different today I feel like my left arm hurts off and on. I don't know what to do.. Has anyone felt this way?