Hi there. I am new to mumsnet. I have just found out I am 6 weeks pregnant and am delighted. I went to the hygienist for a scale and polish last week before I was certain I wa pregnant. I have now seen stuff on the internet saying that pregnant women shouldn't get this done in their first trimester as mercury could poison the fetus when the amalgam fillings are scaled and polished. I have lots of amalgam fillings and am now sick with worry about it. Would the hygienist have avoided scaling and polishing these fillings as a matter of routine or is it as bad as I think it is and I could have caused the baby brain damage. I feel so awful as I wish I hadn't gone at all.