Plasma volume increases by about 50% from 2.5 litres to 3.75 litres during pregnancy in the mother. Cardiac output increases by 30% to supply more blood to the baby. The heart rate of the mother also increases by 20 beats per minute to 80 to 90 beats per minute.
How your baby looks
She/he is as big as a Pineapple by the end of the 7th month of the pregnancy.
Your baby is 33-36 tall and now weighs 1-1.8 kilograms.