I had various pains in different ways. I did feel pain when I breathed in but I also had continual pain. when I wasn't having stinging pains I had a pressure like feeling like a trapped stone felt like at bottom of oesphagus it was so intense at times I often thought I had a hiatus hernia so was glad to have endoscopy to rule that out. I am assuming you've had an endosopy to tell you you have Barretts? You'll know it's not good thing to have got barretts. Hope you don't mind me saying, promise I am not being judgemental, but where you say you don't drink a lot, you did say for last 10 years you had a drink most nights that is a lot of alcohol, I think that you will get better if you realise it will take time, could be a long time, but you can do it. Look at it as a journey, I am having to do that now I have the Candida and swollen belly. You have to be kind to yourself, watch out for stress as this tightens muscles and can make it feel worse, try meditation music each day, I did 10 mins each day jsut to relax and it did help. I was given Gaviscon by doc, utterly useless stuff, my friend who also had reflux was given it by docs too and found it rubbish didn't do a thing, but we both found we got quite a lot of releif from Rennie extra, I used to eat 2 of these before going to sleep or if it woke me up at night. I expect someones told you to prop your bed up quite a bit so you are sleeping down hill, that's meant to help too. I bought myself Slippery Elm powder off Amazon, you heat 1/2 cup milk, put 2 tsps of SE in saucepan when milk got nearly hot, mix with wisk pour in cup shake of cinnamon and or honey, it goes a bit googy, it's meant to help line your oesophagus and ease stomach, I found it helped me a bit. One of the best things besides Rennie Extra was pure Marigold tea which I still drink if stomach feeling unsettled, get off Amaazon, it's very soothing, only meant to have 1 tea bag a day or it's too potent for some reason, it's really good. I could not eat apples or tomatoes too stingy, stay off caffinated tea and coffee, drink more herbals. try cocunut milk and or cocnut oil off spoon. It's your digestive system that's upset somewhere, it's gone wrong, your valve is meant to close at top of stomach and not let acid back up, it could be inflamed you need to think soothing drinks, soothing food, cut down on the meat or give it up, eat fish, eat small portions food help your digestion in anyway you can, you have to stop the reflux or you could be in worse trouble later. Iw ould be careful about going to the gym, (not saying don't try it) might be better to learn to relax or a bit of yoga class.
If is was me I would def give up all alcohol till i was clear of problem and if I had barretts I'd have to think hard about consuming it again. Stay off fizzy drinks if your not doing so already. You've got to think balence, what can I do to help the inside of my digestive system sort it's self out, I wonder if some probiotics might give you a helping hand, it's something I never thought to try. It is very hard going acid reflux, I hope you feel some improvement soon, perhaps go see a holistic therapist. Hope I've not written too much, as you can see my last 5 months has been quite a journey and I'm still on it, my goal to be back how I was!