I am 19 soon to be 20. I have a history of un diagnosed mental issues that family believes to be depression or bi-polar disorder. Aside from that I medicate with medical cannabis to relieve both the depression and knee pain I have from a recent surgery. I have medicated for roughly 2 years and never had any problems. Recently I had an episode where I had what i believe was a panic/anxiety attack. My heart felt like it was gonna stop beating and it felt like I was gonna die. I was scared mostly by the shortness of breath and the slight sharp pains when taking a deep breath. Of course my biggest fear is that it isn't anxiety and that it is something wrong with my lungs or heart. I stopped medicating for the past 5 days but the symptoms still come and go, mostly when I am thinking about it the most or home alone. The symptoms I get while at work or just during the day is a feeling as though I have to try hard for a breath, a sometimes sharp pain when breathing in deep. And that feeling as though my heart could stop any minute. I don't take any other medication aside from melatonin to help me sleep. I have never drank or taken any form of drugs. Cannabis has been my only medication and has been amazing at helping, but I am worried it may have caused a problem in my physical or mental health. I am also worried it is my habits seeing as I recently moved out of state on my own with my girlfriend, got my first job working as a motion graphics artists where I get a lot of judgement and don't eat the best, I am 5'7 155lbs. I have always had a history of very bad and dark thoughts about myself which is why I am leaning towards anxiety but still it lingers in the back of my head that it is my health. Knowing what the cause of this will hopefully relieve my anxiety or prove to me that its my health and warrant a doctor visit.