I am new to this site. I've been searching for some help in getting my symptoms under control and trying to understand so I can help myself. My first attack happened this past July. I went to the ER with low oxygen levels (85%), heart palpitations, high blood pressure, chest discomfort, severe fatigue. They could not find anything wrong so I continued with several Dr. appointments trying to find out what happened as it really scared me!! One of my appointments found a mitral valve issue that will need to be looked at in a couple of years. They also found irregular heartbeats. They said both were nothing to worry about. Maybe this knowledge is what gave me my other attack that happened last week? Since the first attack in July, I've quite exercising for fear of pushing my heart too hard (former marathoner) and I've also radically changed my diet to whole food plant based and lost 15 pounds. I've had previous stressors the past couple of years (who hasn't?) like my son who has decided to dive head-first into drugs. He became homeless, ended up in jail several times. He is now somewhat better. My daughter had a lymphoma scare and during that time my husband had some indescretions. My daughter had the tumor removed and all is good with her. My husband and I went through counseling and we are at a great point in our marriage. Is all of that catching up with me? I've also read that one of the symptoms of mitral valve prolapse is anxiety/panic. I believe knowledge is power so that is why I am here-to read and learn and hopefully someday, be able to help someone else. :)