Lactogen gluten intolerance stomach bone

I am Unwell for a long time now. I don't know what is the problem with me. Recently I had consultation with gastroenterologist and orthopedic on practo platform and also in past I visited 2 doctors out of that one was a Ayurveda MD he provided me solution to some extent whereby he said that I am trouble with gluten and lactogen. So he told me to discontinue wheat flour, maida, fast-food, Milk etc. I stopped and I felt a bit better. At the same time he carried out few tests on me and discovered that I am highly B12 and D3 deficit. So he gave me his own medicinal preparation with BASICS tablet daily one and ARCHITOL NANO 60K weekly one for 12 weeks. All this helped me to recover me some extent, but since I wasn't well and happy I thought of consulting a allopathy doctor. Later allopathy doctor prescribed me NUPENTA D, LIBRAX, NEXITO PLUS, IMMUNAZE, AND PREGATOR. which I took for 3 months. After all this still I am not feeling good. I don't understand what is problem with me.