Whilst pregnant your body will go through a huge change not just physical but hormonal and emotional changes take place during pregnancy over a relatively short period of time. Your body has to adapt to carrying up to 20lb of baby, waters and placenta, which can impose physical strain on all your organs and tissues. The majority of this weight will be carried infront causing your centre of gravity to change.
Existing back problems, or strains on your body from past accidents or trauma, will also make things uncomfortable. Postural changes may cause backache, neckache, headaches, aching legs and undue fatigue. Postural changes through the lower ribs and spine can impede the action of the diaphragm and make breathing difficult.
During pregnancy aches and pains are common, as your body changes to accommodate the increasing size and weight of the uterus. Changes to posture will also happen.
Ligaments will soften during pregnancy, this is caused by hormones changing. These changes allow the bones of the pelvis to separate slightly during the delivery to facilitate the passage of the baby head through the pelvis. Unfortunately this softening affects the whole body and makes the body more vulnerable to strains during the pregnancy.
Your baby will grow and take up more space within the abdomen therefore there is less space to move about, your baby will find a preferred position. Your posture has to adapt to accommodate the position of the baby, and if this conflicts with her own postural needs it may again cause undue aches and pains. This is the reason that one pregnancy may be much more uncomfortable to carry than a previous.