Is it GERD or GASTRITIS. On this.

Hello... started of on July 6 post workout ...had consumed pre-workout drink (caffeine one of the ingredient- double the dose on that day) n prior to it has black coffee as pre-workout from months plus spicy food (moderately spicy) n for a month alongside lunch had green chillies 2-3... My primary complain/ symptom... belching/ burping along with tingling sensation around the chest (slight pricking) at times... medicine course(12 days rabeprazole 20mg morning- evening and later sompraz20 and lesuride25 for a month...just finished the course n in much better state but still at times there is a phase of belching along with tingling sensation around the chest region (pricking types)... Is this a serious condition...I don't suffer from any other systemic condition... recently got test done(comprehensive... blood sugar... everything is in normal range except for vitamin d (low levels)... please do respond on this...thank you.