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When Does Morning Sickness End? Complete UK Guide

When Morning Sickness Typically Ends

For most UK women, morning sickness eases off between weeks 12 and 14 of pregnancy, as the first trimester comes to a close. This coincides with the point at which hCG - the main hormone driving nausea - levels off and begins to fall.

The end is usually gradual rather than sudden. You might notice good days becoming more frequent, nausea coming later in the day, or longer stretches between bouts of sickness. For many women, the improvement is clear by 14 weeks, and most feel back to normal by 16 weeks.

Typical Timeline

  • Weeks 9-10: Peak nausea for most women
  • Weeks 11-12: Symptoms begin to ease, though many still feel sick
  • Weeks 13-14: For the majority, nausea fades significantly
  • Weeks 15-16: Most women are symptom-free or only mildly affected
  • Weeks 17-20: A small percentage still notice occasional nausea

Every pregnancy is different. Some women feel better at 11 weeks, while others are still waiting at 16.

Why Does It End?

Morning sickness improves as the placenta takes over hormone production from the ovaries around the end of the first trimester. This transition usually causes hCG to level off and gradually decrease. As hormone levels stabilise, the digestive system also returns to a more normal rhythm, and the heightened sense of smell that triggers many women's nausea tends to settle.

When It Lasts Longer

Around 10 to 20 per cent of women still have some nausea beyond week 16, and a smaller number continue to feel sick into the second trimester or even the third. This is more common if:

  • You are carrying twins or higher multiples
  • You have had hyperemesis gravidarum in a previous pregnancy
  • You are particularly sensitive to hormonal changes

It can be frustrating when everyone around you seems to be feeling better and you are not. Remember that a longer-than-average duration is not a sign that anything is wrong with your baby - just that your body is responding to hormones differently.

What Can Help It End Sooner

You cannot force morning sickness to end, but you can avoid making it worse:

  • Keep eating small, frequent meals to prevent blood sugar dips
  • Stay well hydrated
  • Continue to rest - tiredness prolongs nausea
  • Avoid known triggers even when you are starting to feel better
  • Do not rush back into heavy meals too quickly

Some women find their nausea briefly returns around week 18 to 20, often as the baby has a growth spurt and hormone levels shift again. This is normal and usually brief.

When to Speak to a Professional

Contact your midwife or GP if:

  • You are past 14 weeks and vomiting is still preventing you from keeping fluids down
  • You are losing weight
  • You feel dizzy, weak, or faint
  • Your symptoms suddenly get much worse after improving

Severe, persistent sickness past the first trimester may need investigation and treatment. It is not something to simply endure.

A Final Word

Knowing there is usually an end in sight is often what gets women through the hardest weeks. If yours is lasting longer than expected, ask for support. Your midwife has seen it all before, and there are safe treatments available that can make the remainder of your pregnancy far more comfortable.