It is the most conclusive clinical sign of pregnancy. Third Trimester Symptoms Amenorrhoea Persists. Enlargement of the abdomen is progressive which produces mechanical discomfort to the patient such as palpitation or dyspnoea following exertion. At about 38th week a sense of relief of the pressure symptoms is obtained due to descent of the head of the fetus into pelvis. Frequency of micturition reappears.
Foetal movements are more pronounced.
Signs Cutaneous changes - Increase in pigmentation and striae. Uterine shape becomes spherical from cylindrical beyond 36th week. Braxton Hicks contractions are more evident.