As your abdomen and breasts grow, you may get stretch marks. These are harmless and usually fade after the baby is born. You may find the extra weight you are carrying makes you tired, and you may get breathless as your expanded womb makes your lung capacity smaller.
Some women have trouble finding a comfortable position to sleep in. Your baby’s head drops down into your pelvis (engages), getting ready for delivery — for a first baby this will usually happen toward the end of the pregnancy (around 37 weeks onwards). This can cause pressure on your bladder and you may need to pass urine more often. If you’ve had a baby before, the head may not engage until labour.
Braxton Hicks contractions (practice contractions) can start in the second trimester, but are much more likely in the third. These can be mistaken for labour but the difference is that real labour contractions will continue to occur regularly. Braxton Hicks contractions only last about 25 seconds.