So I (22M) had my first anxiety attack in 2014/15 my heart just randomly started racing really bad one day just beating out of my chest. It stopped after a few minutes and I wasn’t worried. It would rarely happen after that so I didn’t think much of it. 

Over the past few months I’ve had tons of stress and a new onset of depression i felt in the lowest spot mentally of my life so far. But now over the past couple months my hearts been doing this much more often. It seems to only do it when I’m not very mentally occupied. I took my heart rate on my Apple Watch during one of the episodes and an atrial fibrillation showed up, I of course googled that and read a bunch about it. Now I convinced myself I have congestive heart failure and that I’m going to die at any moment.. I’ll be scheduling a doctor visit asap but I just don’t know how to handle this.