--- title: 'Baby Blues or Postnatal Depression: How to Tell the Difference' slug: baby-blues-postnatal-depression-difference lifeStage: postpartum category: Mood medicalReviewer: 'Dr Jade Thomas, HCPC Registered Psychologist and BPS Chartered Psychologist' reviewerId: 'https://blog.bloume.com/postpartum/medical-board.md#dr-jade-thomas' lastUpdated: '2026-08-11' primarySource: 'NHS — Postnatal depression overview' wordCount: 1057 readTimeInSeconds: 264.25 --- # Baby Blues or Postnatal Depression: How to Tell the Difference In the days after birth, feeling tearful, overwhelmed, or emotionally unsteady is common. These feelings often belong to what is known as the baby blues, a short-lived shift that usually passes within two weeks. Postnatal depression (PND) is different. It lasts longer, feels more intense, and needs support. Knowing the difference between baby blues and postnatal depression can help you recognise what you are going through and know when to reach out. **Q: How long do the baby blues usually last?** A: The baby blues tend to arrive somewhere between three and ten days after giving birth and usually settle on their own within two weeks. If low mood, tearfulness, or anxiety carry on past the two-week mark, it is worth speaking to your GP, midwife, or health visitor. In the first days after birth, sudden tearfulness or a low mood that comes and goes is common. So is a tiredness that sits differently from ordinary exhaustion. Most of the time this is what's known as the baby blues, and it tends to pass within a couple of weeks. But postnatal depression is a separate experience, with a different timeline and different implications for how you feel and what kind of support helps. Knowing which one you're dealing with matters. ## What the baby blues feel like and why they happen If you feel weepy, on edge, or quick to tears in the first days after birth, this is often the baby blues. They are a mild, short-lived stretch of low mood, tearfulness, and irritability. Up to 80% of new mothers go through them, and they are a normal reaction after childbirth. These feelings tend to arrive somewhere between three and ten days after giving birth. They come largely from the sharp hormonal shifts that follow delivery, mixed with broken sleep, physical recovery, and the adjustment to a new role. You may feel weepy for no clear reason, anxious, restless, or more easily moved than usual. What sets the baby blues apart is how quickly they pass. These feelings usually settle on their own within two weeks of birth. If you are in them right now, it may help to know the window is short. If they carry on past two weeks, that is when telling baby blues and postnatal depression apart starts to matter. ## When low mood is postnatal depression Postnatal depression (PND) is a deeper and longer-lasting low than the baby blues. It affects more than 1 in 10 women in the year after childbirth, and partners and non-birthing parents can be affected too. If you are in that first year after birth and something feels persistently low, it is worth knowing what PND can look like. PND can build slowly or come on more suddenly, and it can start at any point in the first year after birth. It does not follow a fixed schedule. You might feel fine in the early weeks, then notice something shifting at two months, or four months, or later. ### Symptoms that point toward PND PND usually brings a cluster of symptoms that stick around and start to affect daily life. You might notice: - Persistent sadness or low mood that does not lift - Loss of interest in things you usually enjoy - Low energy and lasting tiredness beyond what newborn care alone explains - Trouble concentrating or making decisions - Difficulty sleeping even when your baby sleeps - Feeling guilty, worthless, or unable to cope - Difficulty bonding with your baby In more severe cases, frightening thoughts about harming yourself or your baby can come up. These thoughts can come with PND. They are a sign that you need support, and support is available. > **WARNING**: If you are having thoughts of harming yourself or your baby right now, please reach out straight away. Call NHS 111, contact your GP or midwife, or call the Samaritans on 116 123 at any time of day or night. ## The difference between baby blues and postnatal depression: duration and severity The clearest way to tell the two apart is to watch how long the feelings last and how much they shape your day. If sadness, anxiety, or tearfulness carry on for more than two weeks after birth, PND becomes the more likely explanation. Two weeks is a guide, and you do not have to wait that long to speak to someone if what you are feeling is distressing. The baby blues tend to come and go and feel temporary. PND tends to feel heavier, more fixed, and harder to shake. With the baby blues, there are usually moments where you feel more like yourself. With PND, that relief is harder to find. ## When and how to seek support Your postnatal appointments are partly there to check in on how you are feeling. You can expect to be asked about your emotional wellbeing at these visits, so bringing up how you feel is a normal and expected part of postnatal care. If symptoms last longer than two weeks, are getting worse, or feel too much to manage, speaking with your GP, midwife, or health visitor is an important step. Many are trained to spot PND and can point you toward the right support. PND is treatable. Support can include self-help approaches, talking therapies such as cognitive behavioural therapy (CBT, a structured form of talking therapy), and in some cases medication such as antidepressants. Recovery is possible with the right support, and any decisions about medication belong in a conversation with your doctor. --- **Q: How long do the baby blues usually last?** The baby blues tend to arrive somewhere between three and ten days after giving birth and usually settle on their own within two weeks. If low mood, tearfulness, or anxiety carry on past the two-week mark, it is worth speaking to your GP, midwife, or health visitor. **Q: What is the main difference between baby blues and postnatal depression?** It comes down to how long it lasts and how heavy it feels. The baby blues are short-lived, usually passing within two weeks, and are a normal response to the hormonal and physical changes after birth. Postnatal depression lasts longer, feels more intense, and affects how you function day to day. If sadness or anxiety carry on beyond two weeks or get worse, PND is the more likely explanation, and professional support is worth seeking. **Q: Can postnatal depression start weeks or months after birth?** Yes. PND can build slowly or come on more suddenly at any point within the first year after birth. It does not only begin in the early days. If you notice persistent low mood at any stage in that first year, it is worth raising with a healthcare professional. **Q: What should you do if you are unsure whether you have baby blues or PND?** You do not need a clear answer before reaching out. If what you are feeling is distressing, persistent, or getting worse, speaking to your GP, midwife, or health visitor is the right step. You do not have to wait two weeks if you need support sooner. Your postnatal appointments are a natural moment to raise how you are feeling. ### Clinical Sources - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [Perinatal mental health and wellbeing ](https://www.newcastle-hospitals.nhs.uk/services/maternity/perinatal-mental-health-and-wellbeing/) - [What is the difference between postnatal depression and the baby blues?](https://www.tommys.org/pregnancy-information/im-pregnant/mental-health-wellbeing/postnatal-depression-pnd?utm_source) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [Postnatal care](https://www.nice.org.uk/guidance/ng194/chapter/recommendations) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) - [NHS — Postnatal depression overview](https://www.nhs.uk/mental-health/conditions/postnatal-depression/) --- Reviewed by Dr Jade Thomas, HCPC Registered Psychologist and BPS Chartered Psychologist | [Medical Board](https://blog.bloume.com/postpartum/medical-board.md) | August 2026