 Women meeting criteria for project and agreeing to treatment will be randomized into either the 1 Lidocaine or placebonormal saline group. The initial injection of either 1 lidocaine or placebo normal saline will be administered 2 minutes prior to the amniocentesis procedure. 2cc of 1 lidocaine or placebo normal saline will be initially administered as an intradermal wheal, followed by a deeper infiltration of the 1 lidocaine or placebo normal saline to the depth of the peritoneum. All procedures will be performed by either the Maternal-Fetal medicine MFM or the reproductive geneticist utilizing continuous ultrasound guidance under sterile conditions. Each woman will be asked to rate their pain perception immediately after the procedure on two pain scales. 