自し然ぜん妊にん娠しん

noun

natural conception; natural pregnancy

Medical and everyday term for pregnancy achieved without assisted reproductive technology (ART). Often contrasted with 体外受精 (in vitro fertilization) or 人工授精 (artificial insemination).

• 不ふ妊にん治ち療りょうをやめたら、自し然ぜん妊にん娠しんしました。

  After stopping fertility treatment, I conceived naturally.

• 自し然ぜん妊にん娠しんの確かく率りつは年ねん齢れいとともに下さがります。

  The probability of natural conception decreases with age.