The Tommy's Biobank aims to prospectively collect samples from pregnant and non pregnant women to help research in to pregnancy complications. The biobank has been granted permission to ethically approve research projects conducted in the field of reproductive health. The biobank will bring together six biobanks that will all collect samples of high quality according to the standard operating procedures written by experts in the field of reproductive health. We have obtained approval to collect: 1-Endometrium 2-Myometrium 3-Placenta,cord, cord blood 4-Urine 5-Maternal blood 6-Amniotic fluid 7-Vaginal Swabs 8-Omentum 9-Subcutaneous Fat Samples from 1 week old baby 1-Urine 2-saliva 3-Buccal swab 4-meconium (stool) 5-Stool Current Collections: 1- Myometrium from pregnant women who have undergone caesarean section or have had hysterectomies. 2-Endometrium from recurrent miscarriage patients (Frozen, FFPE) 3-DNA ( Whole blood) from recurrent miscarriage patients