I am experiencing shortness of breath when rushing around comes on suddenly i'm 19 stone. get a strange sensation in my chest when happens fine rest?

See your GP.: The NHS systems is strained, but nonetheless your symptoms & complaints should be brought to your GP. You could be deconditioned, but you could have obesity-hypoventilation syndrome, a permanent change in breathing & heart rhythm caused by excess weight. Losing weight is often the 1st step, but it's easier said than done- your GP can help in this regard w/ a program & medications for wt reduction.

Better to be safe!: If you have chest discomfort which lasts for more than a few minutes and is concerning to you, you should seek immediate medical attention. Chest sensations and shortness of breath occurring with exertion may represent a heart condition, asthma, or being out of shape. There are many causes and some are not serious but others can be fatal so please get checked out.