I'm A 59 Year Old Male Who Underwent Cardiovascular Bypass

I'm a 59 year old male who underwent cardiovascular bypass surgery last July a double bypass the other day I got sick and the doctor wanted to take a chest x-ray to see if my lungs didn't have pneumonia Heat took the x-rays and called me back into the X-ray room to show me the x-rays and he said do you see all them white little lines that look like bugs they are Staples on the inside of your body and there is approximately a hundred of them on the left chest region I have no idea that I had them and he has no idea why they are there and neither do I I was just wondering if you could shed some light on that now having said that when I get up in the morning I can feel my insides move forward towards my chest and when I have a bowel movement and push a little bit I can feel everything in my chest moving up nor did the sternum reconnect