(I'm not sure if this is the right place to post this. If not, feel free to point me in the right direction) Ok, I'm not even sure how to describe whats upsetting me, but first a little background. A few weeks ago, my dad had a heart attack while playing cricket. Thankfully, people there knew what they were doing and a hospital was near, so he was luckily tended to very quickly. He's since made a surprisingly fast full recovery, which was a massive relief. Since then I've been highly anxious over my own health, particularly my heart. I honestly don't think i have much to fear about it at the moment, but i keep getting sudden fears over small pains (maybe im becoming a hypochondriac?) As silly as it sounds, i even forced myself to stay up all night a couple weeks ago because a part of my mind was somehow convinced my heart would stop if i fell asleep. I don't know how i could've come to such a conclusion. Is this trauma? I don't really know. Is it possible to have "second-hand" trauma? I'm not sure if I need much in the way of advice or not, i guess I just want to know for sure whether or not I'm overreacting or going crazy or something. It's been bothering me for weeks now.