I'm a 17 year old, 71kg, 6ft2 Healthy male.
I ride mountain bikes for fun and fitness.
Heres the main SYMPTOMS: During exercise I get severe upper left chest pain which leaves me extremely breathless like Ive been punched in the chest, when relaxing I get spasms and fluttering(Mostly when lying on back or sitting in strange positions on the lounge. I also don't always get this pain, I went for a solo ride on Sunday equally as hard with no problems whatsoever(even wearing the same cloths and backpack weight)
This started about 25 days ago and I immediately saw a doctor who told me everything was fine(after ECG).
I have since been researching this on the internet to find hundreds of other people with similar problems who's doctors told them EVERYTHING IS FINE.
Everything is NOT fine! If not for my riding crew I would not of made it home last night. The pain came on suddenly after about 30 minutes of a uphill climb and I could barely even roll down without requiring assistance.