What are probable signs of pregnancy that should be noted by the nurse?

Probable signs of pregnancy are physical changes that can be observed or elicited by a healthcare provider. Chadwick's sign refers to the bluish discoloration of the cervix, vagina, and labia that occurs as a result of increased blood flow and is a classic probable sign of pregnancy. Ballottement is a technique used during a pelvic examination where the practitioner can feel the fetus moving when the examiner pushes against the uterus, indicating the presence of the fetus.

These signs are significant because they provide physiological evidence that pregnancy is likely occurring, which is crucial for early detection and management of pregnancy. In contrast, the other choices represent symptoms that may or may not be indicative of pregnancy and could stem from various other factors or conditions. Therefore, recognizing the definitive probable signs like Chadwick's sign and ballottement helps ensure accurate assessments in clinical practice.