During pregnancy, chadwick's signs, the vaginal tissue and cervix (which are generally a light pink shade) may darken and take on a bluish or purplish tinge. This coloration is caused from the increased blood flow to the vaginal area, leading to engorgement. This visible symptom may be present as early as the 6th week of pregnancy, although 8-10 weeks along is more typical. Impending menstruation may also occasionally cause this.
