Hi all looking for some advice. I have rang gp but they have no available appointments and told me to ring back Monday. My ds is nearly 16 and text me from school today saying his breathing felt slowed down and felt abit out of breath and heartrate high and then seconds later his apple watch sent him a notification saying his heartrate is 120bpm whilst not moving. I asked him if he was possibly abit nervous for his exam etc but he said he wasn't. He then said this happened a few weeks ago and again his watch notified him (I dint know this happened before) He does have pectus excavatum (where the chest dips in) but has had an xray at the hospital which showed no signs of his chest touching his heart, lungs etc. He has no wheezing, cough or anything like that, doesn't feel unwell. Until I get an appointment with the gp I wanted to try get some info or advice on here. Anyone had this or child had this and what was it. What other symptoms should I look out for? Thankyou