I am healthy 20 year old female. I am not allergic to any medicine o anything else. I am a vegetarian but eat well. I am not overweight; I am about 5ft 3 and weight 8 1/2 9 stone. But for months now I have not felt right. I had a very bad virus about June July time and a small case of swine flu around august. Since have felt tired little nauseous. But the past few weeks I have had attacks where I can’t breathe, and it sometime feel like my heart is going to jump out of my chest. I am constantly tired sick and feel weak and thirsty. I have pains in my chest stomach and back. The pains in my back sometimes feel very sharp and make it feel numb. This is followed by my legs going wobbly and I find it hard to walk. I have been to my local hospital and they were no help. I have been to my GP and have been given what I think was called a cardiac monitor, which I gave back this week. But I am so scared, I am just getting worse and things are taking so long to get answers. I’m struggling at work and need for this to be sorted. Is it anything to worry about or am I over reacting.