A mother’s intrusive thoughts about her newborn were a manifestation of OCD. For one woman, the terrifying conviction that she had left her five‑day‑old daughter on a bookshelf downstairs was so vivid that she frantically shuffled her postpartum body out of bed, only for the pain to jolt her back to reality – the baby had been sleeping peacefully in her crib all along.
In that moment, she was experiencing the hallmark of obsessive‑compulsive disorder: intrusive thoughts so powerful they override logic. OCD affects an estimated 750,000 people in the UK at any given time – roughly 1.2 per cent of the population – and half of all cases are classified as severe. Yet, as the mother later discovered, her own symptoms had been present, unrecognised, for decades.
Lifelong pattern of worst‑case scenarios
Before the birth, the mother had always lived with a “worst‑case scenario” mindset. As a child she would become convinced her grandparents would die in front of her; she only realised years later that such fears were not a normal childhood experience. As an adult she stood on train platforms and visualised, in unwanted detail, being crushed by an approaching train. If someone was slightly late to meet her, she would mentally run through every way they might have died.
The turning point came when she read an interview with musician George Ezra on her morning commute. Ezra had spoken about living with a form of OCD known as “Pure O” – purely obsessional OCD, characterised by intrusive thoughts without accompanying physical compulsions. For the mother, it was a revelation: she realised she must have been living with that kind of OCD since childhood. Simply having a probable name for what her brain was doing was enough at the time, and she did not seek formal help.
Research confirms that OCD is widely under‑diagnosed and under‑reported, owing to stigma and a lack of public understanding. The condition typically becomes problematic in late adolescence for men and in the early twenties for women, but can affect children as young as six – with 25 per cent of cases starting by age 14. Onset after 35 is unusual, but can occur.
Postpartum panic: when the thoughts turned to her baby
When the mother became pregnant in 2018, everything changed. Her intrusive thoughts shifted entirely to the baby. Any unusual movement sent her spiralling into a near‑constant fear that the baby had died; she was terrified something would go wrong during the birth. During a routine blood test early in the pregnancy she completely fell apart, refusing to go through with it. A nurse told her, “You’ve got a lot more than this to come,” and she had a full‑on panic attack in the car park, sobbing so hard that two strangers came over to check on her.
Her GP referred her for cognitive behavioural therapy (CBT) to work through the needle phobia. She was given grounding techniques – using her senses to anchor herself to the present moment, feeling the floor beneath her feet – that she still uses today. But the intrusive thoughts consistently got worse, especially after she gave birth.
“When you’re already struggling mentally and then you go through something like postpartum – where you’re sore and exhausted, and your body feels totally alien – it can be a recipe for disaster,” she said. She became genuinely afraid of her own mind in a way she never had before. She was scared to sleep in case her baby stopped breathing; she had to keep a hand on her at all times because she was worried she would die if not touched. She would look at her daughter and see her missing an eye or a limb before the image reverted to normal. Carrying her down the stairs, she would visualise falling and crushing her. If anyone took the baby from her, she would see them dropping her.
These are the specific, relentless images of perinatal OCD. The perinatal period – from pregnancy through the first 12 months after childbirth – is a particularly vulnerable time for OCD symptoms to emerge or worsen. Estimates suggest postnatal OCD affects between 4 per cent and 9 per cent of new mothers, with some studies reporting rates as high as 16.9 per cent. For many women it is a new onset: over two‑thirds have no prior history of OCD. For those who already have the condition, as in this case, pregnancy and childbirth can worsen symptoms. Most new cases emerge during the first ten weeks postpartum, sometimes suddenly in the days or weeks after birth.
The shame was suffocating. “These were my most private, most frightening thoughts – and they were about the person I loved most in the world,” she said. “I couldn’t understand why my mind kept doing this to me. I was terrified of what it said about me as a mother.” The National Institute for Health and Care Excellence (NICE) notes that perinatal OCD is often under‑recognised and can be mistaken for postpartum depression. Mothers frequently hide symptoms due to shame, guilt, and fear that their baby might be taken away – a secrecy that delays help‑seeking.
She tried to get help. Her GP referred her to a group therapy session, but she could not face it. “I was already afraid of what my thoughts revealed about me; the last thing I wanted was to say them out loud in front of strangers,” she said. She did not go, and because she did not go, she did not ask for help again. She now wishes she had known it was okay to say: “This option doesn’t work for me, I need something different.”
As her daughter grew older, the intrusive thoughts became a background hum – awful, but almost normalised. She worried the child would choke or go missing. She trusted her nursery completely – “the fears had nothing to do with them, and everything to do with the relentless worst‑case factory inside my head.” If her partner was away for the night, she forced herself to stay awake in case she died in her sleep, leaving her daughter alone in the house.
Eventually, she realised it had gone too far. During a weekend away with a friend, she was asked how she had slept. She had not – she had been up all night sporadically checking the room to make sure no one was hiding in there. She relayed this in a self‑deprecating way, and her friend’s look of genuine concern made her understand: “This was really bad.”
Diagnosis and management
In July 2024, she returned to her GP, who diagnosed her with OCD and referred her to a therapist, who then confirmed the diagnosis. She was prescribed SSRIs – the most commonly used medication for OCD, recommended by NICE alongside CBT – which have “quietened the constant noise in my mind considerably.” Over the next six months she learned to manage the intrusive thoughts.
The shift that helped most was a reframe her therapist offered: that her mind fixates on the worst possible outcomes precisely because she loves the people in her life so much. “I had never thought of it that way before,” she said. “It helped me feel less ashamed of thoughts I’d spent years being terrified to admit to.” Research on perinatal OCD supports this perspective: intrusive thoughts of infant harm, while deeply distressing, are not associated with an increased risk of actual harm. They are a manifestation of anxiety, not a prediction of what will happen.
She still experiences intrusive thoughts regularly – probably upwards of ten a day. “But I can recognise them now for what they are,” she said. “The SSRIs have made it easier to sleep. My brain is quieter.” She is not by any means fixed, she added, but she is no longer living every single day in fear.