Hello, I am a 21 year old female 5'4 155lbs. I've always been extremely active up until the past year or so. 5 days ago I began running 1 mile a day every day. 4 days ago I woke up with tightness in my chest that has been there ever since. I do have exercise induced asthma, however, I've been using the inhaler and it hasn't done anything. I can breath fine other than it feeling like someone is sitting on my chest. My resting heart rate has been hanging around 86 bpm. It also feels hard to swallow at times. Does this sound like a heart condition or something else?