I also have the same dilemma. I am also 15 weeks pregnant and I had a cavity filled today. The procedure done today was approved by my OB-GYN but I still can't help wondering about the effects of the fillings to my unborn child. I read somewhere that pregnant women should have their fillings removed because of the mercury they contain, which could harm the baby. Any advice,please? Thanks.
Don't worry too much about it, your dentist would not perform any treatment that could be harmful to your unborn child.
A healthy and hygienic set of teeth is always important, also during pregnancy!
When pregnant, you could be more susceptible to bleeding gums and/or sensitive tooth necks. Don't be deterred by this, it is very important that you keep on brushing just as thoroughly.
If dental rehabilitation treatment of any kind is required during pregnancy, try and limit it to short visits, and only undergo what is absolutely necessary.
Try and always be positive, find yourself in friendly surroundings with comfortable things, and spend time outdoors in nature's playground. Everything that you feel - your baby feels too!