Water retention can occur due to any of the following reasons: 1  An unbalanced diet and lack of exercise. 2  Reaction to some drugs can cause fluid retention too. 3  Dehydration: as the body tries to keep the extra water. 4  Menopause is often associated with water retention in women. 5  Diseases like Thyroid, Arthritis and Varicose Veins.
Types of gallstones. Types of gallstones that can form in the gallbladder include: 1  Cholesterol gallstones. 2  The most common type of gallstone, called a cholesterol gallstone, often appears yellow in color. 3  These gallstones are composed mainly of undissolved cholesterol, but may contain other components.t's not clear what causes gallstones to form. Doctors think gallstones may result when: 1  Your bile contains too much cholesterol. 2  Normally, your bile contains enough chemicals to dissolve the cholesterol excreted by your liver.
If you end up throwing up because of it, it's yellow from the bile. If it's suspected they'll ultrasound your gallbladder. From there they can do blood tests to see if there's an infection in your blood. That's one of the reasons it's so important to get it removed if you have gallstones.