I went to the dentist yesterday as an old filling had cracked and I kept cutting my tongue on it. He told me it had to come out and replaced it with a white filling. He knew I was still breastfeeding as he made a point of telling me the anaesthetic would not affect my milk. I am now panicking because I am feeling really dizzy and lightheaded this morning. DD also slept through the night for the first time last night and has since fallen asleep under her baby gym! I'm worried I have exposed us both to mercury from the amalgam filling removal - I rather predictably googled and found all sorts of horror stories! The dentist didn't seem to take any particular precautions when removing the filling. Any advice?