Please do remember that gall stones are found in the gall bladder and never in the liver. So, forget what has been told to you.
You have now developed 'adult-onset acne', which most commonly affects women. Sharp hormonal fluctuations often occur during, pregnancy, perimenopause, and menopause, and can also be caused by using certain birth control medications. Women may see their acne suddenly develop, or worsen, during these periods of life.
Also, you should verify that what you are experiencing is really acne vulgaris, especially if you have never had acne before. Some skin problems, like rosacea and folliculitus, cause acne-like pimples. Getting a doctor's opinion is always a smart idea and will help you properly treat your breakouts, no matter what the cause.