I have a 10 month old son. He loves to nurse and I am happy to bf as long as he would like, howerver I am concerned about my metal fillings ( I have quite a few!). I know he is getting some mercury through the breastmilk, which is of concern to me. So, I am just wondering if I should go ahead and stop at a year in my case, as continuing on may be more harmful than beneficial? Thanks in advance for your opinions!