I am happy to hear you that you stopped smoking, and alcohol.your problem may be related to stomach,muscle,spine,any stone in
kidney or ureter,or body organs in that area .it is different for me to come to conclusion without further evaluation.
Next Steps
please visit a general physician in hospital with good infrastructure.
Health Tips
check
sugar,bp,cholesterol.do regular exercises,avoid junk food ,eat hygiene food and purified water.maintain healthy life style.