Final answer:
At 35 weeks of gestation, swelling of ankles and feet can occur due to circulatory changes, fetal movement increases, while severe headaches need medical attention. Decreased urinary frequency is unexpected as frequent urination is common due to the fetus exerting pressure on the bladder.
Step-by-step explanation:
The third trimester of pregnancy involves significant changes to both the fetus and the mother's body. At around 35 weeks of gestation, a woman may experience various common discomforts due to the ongoing physiological adaptations. Among the manifestations of potential pregnancy complications, swelling of ankles and feet may indicate circulatory problems and is not uncommon due to the increased pressure from the uterus on the veins in the legs, leading to edema. An increase in fetal movement is expected as the fetus becomes more active and its movements stronger. However, severe headaches could be a cause for concern as they might indicate underlying conditions such as preeclampsia. Lastly, decreased urinary frequency is generally not expected, as the growing fetus typically exerts more pressure on the bladder, resulting in an increased need to urinate.
It is important for expectant mothers to monitor their symptoms and consult with healthcare providers if experiencing severe or unusual symptoms such as severe headaches or sudden changes in swelling or fetal movement.