After terminating a pregnancy via various ways, the "2 lines" phenomenon may persist due to the body's hormones and pregnancy tests continue to produce positive results.

Postpartum infection, also known as puerperal infection, is one of the most common obstetric complications. It occurs when bacteria enter through the genital tract via wounds during childbirth, then settle where the placenta attaches in the uterus, potentially affecting all parts of the genital tract or spreading further.

Endometritis is a prevalent gynecological disease among women of reproductive age, particularly those who have recently given birth. If not diagnosed and treated promptly, it can adversely affect a woman's reproductive health in the future.