Inclusion criteria:
Normal pregnancy and delivery
Age between 15-45
Primeparous
Body mass index (after delivery) between 18.5-30 kilograms per square meter
Having at least reading and writing literacy
Exclusion criteria:
Gestational age below 37 weeks or above 42 weeks
Suffering from diseases that interfere with wound healing (such as anemia, infection and wounds in the perineum, diabetes, blood pressure, skin, heart, kidney, lung diseases, coagulation disorder, immunodeficiency, hemophilia, connective tissue disorder, depression, malnutrition, mental illness, cancer)
Taking drugs effective on wound healing by the mother (anticoagulants, antidepressants, antiepileptics), alcohol, smoking, glucocorticoids, immune system suppressors, antibiotics, and narcotics and psychotropic drugs, not doing chemotherapy
The duration of rupture of the water bag more than 18 hours
Instrumental vaginal delivery with medial or lateral episiotomy incision
Non spontaneous removal of the placenta
History of injury or previous surgery and visible lesions in the perineum (genital warts, hemorrhoids) and persistent constipation (according to the patient's statement)