I (32M and healthy) was playing tennis about 2-3 months ago and driving back home, I started to get a lot of tightness in my chest. It wasn't going away, which scared me, and I thought I was having a heart attack.
I went to the doctors office and he did an ecg, chest x-ray, and echocardiogram, along with blood tests, and everything came back normal, despite the ecg being a little bit abnormal, though he wasn't worried. Ever since, I've had a lot of chest tightness and everyday I feel like I'm having a heart attack, which is extremely anxiety inducing for me.
There's no pain though and not much soreness, and it's pretty position dependent, with standing and sitting causing the tightness, while laying flat on my yoga mat and bending down like I'm touching my toes giving me relief. I'm going to physical therapy 2x a week and it helps a little bit, but can't say that I feel much better. I feel like no one really knows what's wrong and everyone has a different theory. Does this sound like costro, or something else? Seems like most people have pain with costro but luckily I don't. Thanks!