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Second trimester

13 Weeks Pregnant

Into the second trimester

This week your baby is around the size of a lemon.

How your baby is developing

  • Around now many parents enter the second trimester.
  • Your baby is growing and may make small movements.

What may be happening in your body

  • A small baby bump may now be visible as your womb grows upwards and outwards.
  • If you've been feeling the urge to pee more often, that should ease now as the womb moves up and away from your bladder.
  • There's a lot more blood pumping around your pelvic area now, which can also make you feel thirstier — so drink plenty of fluids.

How you may be feeling

  • Feeling more like yourself again can bring a quiet sense of relief for some.
  • If the intense early weeks are easing off for you, a calmer stretch can feel like room to breathe.
  • If it still feels too early to fully relax, that caution is understandable at this point.

Worth remembering

You may not feel any movement until around week 17 — a quiet bump is completely expected right now.

A closer look

A bump begins

Around now your uterus grows up and out of your pelvis, which is why a small baby bump may start to show. There's also much more blood pumping around your pelvic area — enough that some people feel thirstier than usual, and some notice their sex drive increases. All of this is part of the second trimester getting under way.

A break from constant loo trips

As the womb rises up out of the pelvis around now, the pressure on your bladder can ease, so some notice fewer trips to the toilet than in the busy early weeks. This is a temporary shift for many people. It often returns later in pregnancy as the baby grows and presses down again.

Something you can do this week

If your energy lifts, gentle activity you enjoy can feel good — without pressure.

What comes next

The middle weeks of pregnancy are ahead — for many parents, a favourite stretch of the journey.

Professional support

Services ParentSide defines for this stage. Each page explains what the service covers and which professionals are approved to provide it.

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Sources and updates

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This content is based on estimated averages and general information; it does not replace medical advice. If you are concerned about yourself or your baby, speak with a qualified healthcare professional.

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