basically for quite a while now i have had a constant on and off feeling in this area. its like someone literally has there hand on the lower half of my left rib and then they are digging there fingers into me. the area is basically the middle of my body but at the lower half of my rib cage. it is a very uncomfortable feeling. i was wondering what it could be? when i turn over on to my side it feels like something is like lodged there its a really weird feeling and when i lie on  my back it just feel as like pressure and that constant feeling i described earlier. does anyone have an idea what this could be. i do participate in sports and the gym as im on that specific course in uni. and also just recently collapsed due to low blood pressure and basically chest planted the floor on a beach but in saying this i have had this feeling way before this happening. but now it is back and doesn't seem to be coming or going like it has been for ages???