Positive signs of pregnancy are defined as:

Positive signs of pregnancy are specifically defined as objective indicators that provide definitive evidence of the presence of a fetus. These signs are not based on personal perception or symptoms reported by the pregnant individual but instead include observable or measurable factors that can be documented by a healthcare provider. Examples of positive signs include the detection of fetal heartbeat by ultrasound, visualization of the fetus via sonography, or the presence of fetal movements felt by a healthcare professional during a physical examination.

This definition is crucial as it differentiates positive signs from other types of signs of pregnancy, such as the physiological and anatomical changes that may occur (which would fall under a different category). These other changes can include subjective signs like morning sickness or fatigue, which, while common in pregnancy, do not alone confirm the presence of a fetus. Thus, the emphasis on objective signs highlights their reliability in confirming pregnancy, which is essential for proper prenatal care and management.