Husband doesn't understand morning sickness? Send him this.
Morning sickness is nausea and vomiting caused by pregnancy, and despite the name it can hit at any time of day or last all day. The NHS says around 8 in 10 pregnant women feel sick, are sick, or both, and that it usually clears up by weeks 16 to 20. A severe form called hyperemesis gravidarum needs treatment, and the warning signs are below. [NHS · NHS]
▸For you: before you send it
The parts marked For him are written to him, including the signs that mean calling for help, so he knows them too.
▸For him: what is happening in her body
Nausea and vomiting are very common in early pregnancy. Hormonal changes in the first 12 weeks are thought to be one of the causes. It can happen at any time of the day or night, or last all day. [NHS]
It usually starts before 9 weeks and, for most women, eases by 14 weeks. The NHS says it usually clears up by weeks 16 to 20, though for some it lasts longer. [ACOG · NHS]
Ordinary morning sickness does not put the baby at increased risk. It can still seriously affect her day-to-day life, including her ability to work. [NHS · ACOG]
Tiredness can make nausea worse, and smells that never bothered her before can now set it off. [NHS · ACOG]
▸For him: what it feels like from her side
Picture motion sickness with no end time, then getting up and going to work anyway, and trying to eat because an empty stomach makes it worse.
There is no single treatment that works for everyone. Rest, small plain meals, sipping fluids and avoiding trigger smells help some women. If those do not work, her GP, midwife or OB can recommend medicine that is safe in pregnancy. [NHS · ACOG]
▸For him: hyperemesis gravidarum, the severe form
Hyperemesis gravidarum (HG) is much worse than normal pregnancy sickness. The NHS says it affects around 1 to 3 in every 100 pregnant women, and ACOG puts it at up to 3 percent of pregnancies. It often needs hospital treatment, and it is not caused by anything she did or did not do. [NHS · ACOG]
- Nausea and vomiting that is severe and goes on and on, sometimes many times a day
- Not being able to keep food or drink down
- Signs of dehydration: feeling thirsty, tired, dizzy or lightheaded, peeing very little, and dark, strong-smelling pee
- Losing weight
- Sickness that has not eased by 16 to 20 weeks
[NHS]
Call her midwife, GP or NHS 111 in the UK, or her OB in the US, if she is vomiting and cannot keep food or fluids down for 24 hours, has very dark pee or has not peed in 8 hours, feels very weak, dizzy or faint when standing, has a racing or pounding heartbeat, has tummy pain or a high temperature, vomits blood, or has lost weight. Getting help early helps avoid dehydration. If she collapses or you are seriously worried, call 999 in the UK or 911 in the US. [NHS · NHS · ACOG]
HG can affect her emotionally as well as physically. She may feel anxious about leaving the house, or isolated because nobody around her understands it. Without treatment it can also lead to depression, so how she is feeling belongs in the conversation with her midwife or doctor too. [NHS]
Three things to do tonight
- Put plain crackers or dry toast and a glass of water on her side of the bed, so she can eat something before she moves in the morning.
- Take over cooking and the bins, and run the extractor fan or open a window when you cook.
- Keep a bottle of water by her and refill it all evening. Sips little and often are easier than a full glass.
It is called morning sickness, so why are you sick at night?
Send him the part written for him
The link opens at his section: what morning sickness is, the hyperemesis warning signs, three things to do tonight, and the one sentence to avoid.
▸Common questions
Why doesn't my husband understand morning sickness?
The name makes it sound minor and brief. In fact the NHS says it can hit at any time of day or last all day, and it can seriously affect daily life. Sending him the facts, including the warning signs, usually works better than describing how it feels.
How long does morning sickness last?
ACOG says it usually starts before 9 weeks and, for most women, goes away by 14 weeks. The NHS says it usually clears up by weeks 16 to 20. For some it lasts longer, and hyperemesis gravidarum may last until the birth.
What is hyperemesis gravidarum?
The severe form of pregnancy sickness: prolonged, severe nausea and vomiting, with dehydration and weight loss. The NHS says it affects around 1 to 3 in 100 pregnant women and often needs hospital treatment. See your GP, midwife or OB early.
When should I call a doctor about morning sickness?
If you cannot keep food or fluids down for 24 hours, have very dark pee or have not peed in 8 hours, feel weak, dizzy or faint, have tummy pain or a high temperature, vomit blood or lose weight. Call your midwife, GP or NHS 111 in the UK, or your OB in the US.
▸Related decoder situations
▸Sources
Every health fact on this page was checked against these pages. Where advice differs by country, follow your own midwife or doctor.
- NHS: Vomiting and morning sickness checked 2026-10-17
- NHS: Severe vomiting in pregnancy (hyperemesis gravidarum) checked 2026-10-17
- ACOG: Morning sickness (nausea and vomiting of pregnancy) checked 2026-10-17
This is general information for expectant fathers, not clinical guidance. Anything about symptoms, pain, or bleeding goes to your midwife, doctor, or emergency service, not to an app.
He gets his own pregnancy app. Free.
Set your due date, get your week's missions, and start stacking points. Free.