I am 44 years old and the doctor advised me to start calcium tablets. However, calcium, iron does not agree with me. Natural intake of calcium like curd, milk in breakfast also causes me gas trouble. I experience pain in stomach. I have a desk job but even with conscious efforts to do some walking in office doesn't help. I cannot have anything made of refined flour, besan, sprouts. It causes me bloating and heaviness in my stomach. I also have low digestion capacity. I am largely a vegetarian and have fish very rarely may be once in 3 months. Kindly advise.