Hi all. 
l recently had a heart attack -lm in my early 40s. 3 weeks later l have started wheezing and getting very breathless while at rest and have terrible pain in both sides at the back. The pain initially was worse on inhaling but now is a dull constant ache. Saw GP who sounded my chest but did not check my sats. Diagnosed me with COPD and to see a respiratory nurse and have a chest xray in due course. Given a Salbutamol inhaler. However, lm not convinced. The pain is bad and not slept these last 2 nights as it is agony when lying in bed. 
  Not sure if lm freaking out unnecessarily or whether to challenge this diagnosis. I lost my Dad to lung cancer and lm convincing myself this is whats wrong with me. Health anxiety definitely playing a part here but how suddenly these symptoms have came on is really worrying me. Would welcome any advice/opinions. Thankyou,