The doctor reassured her that it's common to miscarry in early pregnancy and not to blame herself.

miscarry 是动词，由前缀 mis-（表示"错误的、不成功的"）和 carry（"携带、承载"）组成，字面意思是"未能成功承载"，在医学上特指"流产、小产"，指妊娠在胎儿能存活前自然终止。