Where Your Right Rib Cage Protrudes Outward The Most, Ive

Where your right rib cage protrudes outward the most, Ive had some lingering aching there for about 9 months.It started after taking up running again, only about 25 miles a month. Now Ive noticed what seems like a knot in that area, not on rib cage, just below the upper right furthest outward point. Lypoma, hernia, ? It is awkward pain at times ,like a tooth ache. Im a moderate drinker at 45 ,in Good shape, no liquor, only beer. Heading to practitioner early next week, just looking for any insights.