Everybody has muscle; and if you're joking that yours are deconditioned, then they are more likely to be pulled or sprained. A sprained muscle hurts more when you use it, so certain movements ought to make it worse. Alcohol can damage nerves and your pain might be a nerve not acting right. Other right upper quadrent pains can be from your gall bladder (usually episodic, associated with nausea, and often vary depending on what and how much you eat), liver (same story), colon (usually change with bowel movements and may move around along the course of the colon). Persistent abdominal pain, especially if associated with nausea or loss of appetite, should be evaluated by a physician.