What are signs of labor that occur in the weeks leading up to delivery?

Lightening and Braxton Hicks contractions are significant signs of labor that may occur in the weeks leading up to delivery. Lightening, also known as "dropping," refers to the fetal head descending into the pelvis, which can happen a few weeks before labor begins. This position change can relieve pressure on the mother's diaphragm and lungs, making it easier for her to breathe but may increase pressure on the bladder, leading to more frequent trips to the bathroom.

Braxton Hicks contractions are irregular, practice contractions that the uterus experiences as it prepares for actual labor. These contractions can start as early as the second trimester and become more frequent as the due date approaches. While they may be uncomfortable, they are generally not as intense or regular as true labor contractions. Observing these signs helps expectant mothers recognize the body's readiness for labor and aids in distinguishing between practice contractions and actual labor.

The other options provided do not represent typical signs of impending labor. Increased appetite and morning sickness are more commonly associated with early pregnancy rather than the late stages before delivery, and while frequent urination can occur due to pressure from the growing fetus or hormonal changes, alone, it is not a definitive sign of labor approaching.