that is something you need to discuss with your ob doctor. since i do not know the method you are planning on doing to remove these toxins (often a laxative) i do not think it would be a good idea to do this while you are pregnant. since these things have unproven safety for you and your baby it would not be wise to postpone detoxification until you deliver and are finished nursing your baby.
what is a safe easy way to remove toxins from yor body while pregnant?