 Methods: a randomized control trial in which parturients for which the placenta was not separated or there is a suspected residual placenta will be divided randomly to two groups: 1 Revision of uterus or Manual lysis without antibiotic prophylaxis; 2 Revision of uterus or Manual lysis with antibiotic prophylaxis as following: 24 hours coverage with Ampicillin 2 grams4, Gentamycin 240 mg1, Clindamycin 600 mg3. In cases of allergy to Penicillin the antibiotic regimen will be: Gentamycin 240 mg1, Clindamycin 600 mg3. 