Apart from case of globus and ab bloating, when i go to sleep and lie down my belly sags inwards and it's disturbing? also back ache that won't go.

Maybe not abnormal?: The key to your answer is in the definition of "won't go away." if you are awakening from sleep due to pain, your symptoms don't come and go but are unchanging and ever present (or are actually worsening) then further evaluation is warranted rather than you just taking symptom-based medicine. As to the sagging inward you're describing, that's probably normal.