Attn Dr. Kadwa - Please help, Gastritis problem

Dear Doctor Kadwa,
I have heard a lot about you in this forum. Please resolve my problem. Since the last 4 months I am suffering from Gastritis problem.
The problem is as follows:
At times I feel pain / pinch / burning sensation in my chest area. The pain is not specific to one place but reflects to other areas like armpit and back. I can pinpoint the location of the pain. I get relieved for some time of this pain after burping or farting, mostly it is burping. My gas does not come out easily from my body resulting in pain. Back pain is frequent in my case. Had similar problem last year but with low intensity, had got similar test done, was resolved because of physical activity i.e. walking, jogging. But this time is not effective. I burp almost 40 times a day and fart almost 10 times a day. Unlike normal Gastritis problem, which gets resolved for few days in between, my gastritis problem is continuing since the last four months without break. I burp frequently mostly after drinking water, feel like food is settling down in chunks in my stomach. Now days I drink water one hour before and after my food. Normally I drink 4-5 liters of water every day. Sleep 2 hours after dinner.

Medical test:
Initially I got suspicious that I may have heart problem, since my father expired because of it. I got most of the blood test done, including lipid profile, thyroid, blood sugar, etc. only 3 blood test were out of range i.e.
Alkaline phosphates 154.42 recommended range 39 – 117
Bilirubin (indirect) 0.86 recommended range 0.1 – 0.75
SGPT 46.4 recommended range 0 – 41
Apart from blood test, I have got TMT, ECHO, ECG, Ultrasound, X-Ray, BP test done and found them normal.

About myself:
Age 40, weight 68 kg, height 175 cms, face is square. I am a software engineer having a sitting job of 9 hours. I had a habit of chewing tobacco (gutkha) since the last 15 years which I have left 4 months back.
I do not cry without reason, I am sympathetic person, never become violent in anger, never showoff, not easily impressed/influenced, never postpone things which I have to do except studies ;-) never think that I have superpower, have high sex drive, irritable at the least things, easily angered, pessimistic, tend to worry about everything, anxious in company, anxious when anything is expected from me, anxious with hurried feeling, anxious about own health, affectionate, feel better mentally after vigorous exercise, not very social person (don’t like making new friends).
Food: like non-veg very much (since the last 4 months have almost stopped eating it), like sweets/fruit to an extent but not very much, like raw onion / pickle/coffee/butter/fatty foods.
Fear: height, snakes (but not afraid watching them on TV), ghosts, buglers, death, for the health of my family, extremely emotional / sentimental.
General feature: have sinus problem since childhood but since the last two years it has reduced a lot, mostly face sinus issues when season change from rainy to winter and autumn to summer. Since the last 4 years new problem of thyroid has come up for which I am taking allopathic medicine Thyrox 25 mg daily. Had chicken pox once in childhood. Typhoid twice 20 years back. Education wise I was not a brilliant student. Just passed examinations somehow.
Family: my father died at the age of 64, he had heart problem (cholesterol, BP, sugar) problem. Mother now 67 has sugar and BP problem. Elder sister 49 does not have any problem, elder brother 46 has BP problem.
My treatment: -
Initially I had consulted a gastroenterologist, he diagnosed it to be GERD, took his medicine for one month but it did not help.
Then I shifted to homeopathic and ayurvedic medicine, took lycopodium 200 (in morning) and triphala at night for a month but it did not help.
Then I moved to Kari Carb 200 (twice a day) and Natrum Phos 6x. I took this medicine for 10 days, helped me a bit but not significant. In between I tried to add Pulsatilla 200 for three days but it seemed to swell my stomach, so I stopped it.
Took Chelidonium Q for three days. Then I took Arsanic Album 30c three times a day for 3 days along with pulsatilla 200 c and Nux Vomica 30 c. Again I felt that Pulsatilla is swelling my stomach and I stopped it.
Now since the last 6 days I am taking Natrum Mur 30 c and carbo veg 30 c three times a day. Now a days I am feeling 40% better than my worst days. Not 100% sure if it is because of Nat Mur.
The above medications is not self-medication but has been recommended by someone or the other. Natrum Mur was recommended as my constitutional remedy. Apart from taking these medicines, I do Anulom vilom and kapal bharti pranayama. I am eating bland food since the last three months, very less oil, that too olive oil and very less spices.

My question to you is:
1. Do you think that Natrum Mur is my constitutional remedy?
2. Do you think I am taking correct medicine for this problem?
3. Should I increase the power of these medicines?

Thanks in advance. I have lot of hope from your end.