<prompt> Billings method is for -ScreeningContraceptionAboionNone  <response>: Cervical Mucus method Also known as Billing s Method or Ovulation method Based on changes in characteristics of cervical mucosa 1.At ovulation : Watery, clear, smooth, slippery, profuse like egg White 2. After ovulation : Thickens and lessens in quantity Ref: Park 25th edition Pgno : 559 