Not to worry, I have similar problems and some of the worry may be adding to the situation.

You need a endoscopic exam as if you suffer regular reflux this can create a ulcer as did mine. This ulcer then causes chest pain esp when it gets inflamed. In my case the pain can be quite severe as my ulcer became a circumferential ulcer I.e went the whole way round the gi tract at the top of my duo denum.

If a full blood count was carried out and your iron hg levels were fine then you are OK. In my case I lost 4 pints of blood due to a small bleed somewhere most likely from one of my ulcers. A low iron level would cause you increased weakness and dozzyness. Esp postural dozzyness I. E when you get up from sitting and you may even feel like your going to pass out.

Stress and anxiety can also make you feel the way you do I suggest that you buy a smart watch with heart rate monitor and you will Lilley see that your pulse rate rises to 110 and above when you are stressed and just sitting down compared to 70-80 this helps by providing positive feedback in that you see that your pulse is high which results in flushed hot face and sysptoms like you have run a mile palpitations etc this the helps you to see you have to relax and knowing that you are not suffering a heart attack etc helps esp when you get used to sati g it's because I'm stressed anxious and then your pulse drops normally I try to empty my mind and concentrate on breathing taking a deep breathe in and the slowly breathing it out whilst putting my attention on my breathing. Once you learn to control this it helps a lot. But as I suggest you should consider asking for a endoscopic exam if you have persistant reflux and the feeling of a sore lump or burn g in your chest area or above. It is a matter of discounting certain things and knowing your ecg should help as we know its not your heart that is the problem. My ulcer was so bad they wanted to cut it out in a major op. I instead refused this as it meant I needed 2 feeds to 2 organs rerouted by removal and replacement else where. I instead healed myself in part by taking a good quantity of gaviscon whenever I had reflux. My ulcer was so bad that they could not get the endoscope through the appiture it left but as I healed it and there was now just a stricture they carried out a push endoscopy and they found 5 other strictures where ulcers used to be. I now control my condion myself and it shows that you can change things if you want to by being aware of them. Whilst your position is not like mine you need further investigations. Anxiety is a major source of symptoms and unfortunatly itself causes acid reflux and symptoms as was the source of my problems they also due to my insistance to carry out proper investigations found I was a ceoliac with a gluten allergy. This condition was the source of my malabsorbtion of nutrients due to the flattening of stomach cilia and my foliate level drop as well as low iron levels was initially blamed on this prior to ulcers appearing.My experience is that stress is blamed by professionals for many things and this can cloud their views but your destiny is in your hands and if necc suggest tests like endoscopy. 

Not to worry, I have similar problems and some of the worry may be adding to the situation.

You need a endoscopic exam as if you suffer regular reflux this can create a ulcer as did mine. This ulcer then causes chest pain esp when it gets inflamed. In my case the pain can be quite severe as my ulcer became a circumferential ulcer I.e went the whole way round the gi tract at the top of my duo denum.

If a full blood count was carried out and your iron hg levels were fine then you are OK. In my case I lost 4 pints of blood due to a small bleed somewhere most likely from one of my ulcers. A low iron level would cause you increased weakness and dozzyness. Esp postural dozzyness I. E when you get up from sitting and you may even feel like your going to pass out.

Stress and anxiety can also make you feel the way you do I suggest that you buy a smart watch with heart rate monitor and you will Lilley see that your pulse rate rises to 110 and above when you are stressed and just sitting down compared to 70-80 this helps by providing positive feedback in that you see that your pulse is high which results in flushed hot face and sysptoms like you have run a mile palpitations etc this the helps you to see you have to relax and knowing that you are not suffering a heart attack etc helps esp when you get used to sati g it's because I'm stressed anxious and then your pulse drops normally I try to empty my mind and concentrate on breathing taking a deep breathe in and the slowly breathing it out whilst putting my attention on my breathing. Once you learn to control this it helps a lot. But as I suggest you should consider asking for a endoscopic exam if you have persistant reflux and the feeling of a sore lump or burn g in your chest area or above. It is a matter of discounting certain things and knowing your ecg should help as we know its not your heart that is the problem. My ulcer was so bad they wanted to cut it out in a major op. I instead refused this as it meant I needed 2 feeds to 2 organs rerouted by removal and replacement else where. I instead healed myself in part by taking a good quantity of gaviscon whenever I had reflux. My ulcer was so bad that they could not get the endoscope through the appiture it left but as I healed it and there was now just a stricture they carried out a push endoscopy and they found 5 other strictures where ulcers used to be. I now control my condion myself and it shows that you can change things if you want to by being aware of them. Whilst your position is not like mine you need further investigations. Anxiety is a major source of symptoms and unfortunatly itself causes acid reflux and symptoms as was the source of my problems they also due to my insistance to carry out proper investigations found I was a ceoliac with a gluten allergy. This condition was the source of my malabsorbtion of nutrients due to the flattening of stomach cilia and my foliate level drop as well as low iron levels was initially blamed on this prior to ulcers appearing.My experience is that stress is blamed by professionals for many things and this can cloud their views but your destiny is in your hands and if necc suggest tests like endoscopy.