Appy · 8 min
When pregnancy isn't happening
8 sections · 8 min read
Is this article right for where you are right now?
• You have been trying to get pregnant and it is taking longer than expected • You are not sure what is normal or when to seek help • You want to understand what affects fertility, for both partners • You have a condition like PMOS or and are thinking about what this means for your future
Time-to-conceive is information about your bodies, not a verdict on either of you.
When is your fertile window, and how do you find it?
Pregnancy is only possible during a short window each month, the 6 days leading up to and including the day an egg is released (). An egg lives for approximately 12 to 24 hours after . Sperm can survive in the body for up to 5 days. This means the days just before give the highest chance of pregnancy.
Estimate your fertile window
An estimate based on your last period and typical cycle length. Cycles vary; this is information, not a guarantee.
This isn't a diagnosis. Take it to your Doctor.
In a 28-day cycle, typically occurs around day 14. But cycles vary significantly between women, and the day of can also vary between cycles in the same woman.
Signs of approaching : • Vaginal discharge becomes clear, stretchy, and slippery, like raw egg white • Mild one-sided pelvic pain or twinges • A slight rise in body temperature (though this rise happens after , so it confirms it has occurred rather than predicting it)
For your doctor
I have been tracking my cycle for [N] months. My cycle length is approximately [X] days (range [min]–[max]). Signs of ovulation I have noticed include [cervical mucus changes / mid-cycle pain / OPK positive on cycle day Y]. I would value a discussion of whether timed intercourse appears appropriate or whether confirmation of ovulation (e.g. mid-luteal progesterone) is indicated.
What this is for: giving the GP your cycle picture in one block so the conversation starts from your data, not from generic averages.
predictor kits, available from pharmacies, detect the hormone surge that occurs 24 to 48 hours before . For women with regular cycles, these can help identify the most fertile days.
How much do people in the UK actually know about fertility?
A UK study of 97,414 women actively found that 41% could not accurately identify their fertile window.
Women from non-White ethnic backgrounds had significantly lower fertility knowledge than White women. Women with irregular cycles were nearly 3 times more likely to not know their fertile window.
This is not a failing of the women in the study. It is a reflection of the gap in fertility education, the fact that most women are never taught this in school, by a doctor, or by their families.
How long does it typically take to conceive?
For couples having regular unprotected sex, approximately 84% will conceive within one year. Some conceive quickly, others take longer. Both are within the normal range of human experience.
Myth
A common belief is that if pregnancy hasn't happened by 6 months, something must be wrong.
Evidence
NICE NG257 (2024) sets the clinical threshold at 12 months of regular unprotected intercourse for women under 35, and 6 months for women 36 and over. Among couples who do not conceive in the first 6 months, a substantial proportion conceive in months 7 to 12 without intervention. Six months on its own does not flag a problem in younger couples.
NICE NG257 (2024), Fertility: assessment and treatment for people with fertility problems.
Quick check
Have you been trying to conceive for more than 12 months under 35, or more than 6 months over 35?
If conception has not occurred after a period of trying, it is reasonable to have a conversation with a clinician, the timing of when to do this varies based on age and individual circumstances, and your doctor can advise you on what applies to your situation.
For your doctor
We have been trying to conceive for [N] months with regular unprotected intercourse. My age is [X]; my partner's age is [Y]. Cycle history: [regular / irregular / absent]. I would value a discussion of an initial fertility workup in line with NICE NG257 (2024), including day-21 (mid-luteal) progesterone for me, semen analysis for my partner, baseline hormones, and consideration of onward referral to a fertility specialist.
What this is for: opening the referral conversation with the right framing, that fertility workup is for both partners and follows national guidance.
What factors affect your chances of getting pregnant?
Fertility is not a single fixed quality. It is influenced by multiple factors in both partners.
In women: • Whether is happening regularly • The condition of the fallopian tubes (whether they are open) • The condition of the womb (the lining, any structural issues) • Underlying conditions such as PMOS, , thyroid disorders • Age, fertility begins to decline gradually from the early 30s and more rapidly after 37 • General health, weight, and lifestyle factors
In men: • Sperm count (how many sperm) • (how well they move) • (their shape) • General health and lifestyle factors • Underlying conditions affecting sperm production
Male factor contributes to 40 to 50% of fertility difficulties. This is a well-established finding that is often underrepresented in conversations about fertility, both in clinical practice and in communities.
How does male factor fit into the South Asian fertility picture?
In many South Asian communities, infertility carries significant stigma, and this stigma falls disproportionately on women. A woman whose pregnancy does not happen is often assumed to be the reason. Male fertility is a topic that is rarely discussed openly, and testing is often resisted or deferred.
Research by Mumtaz et al. (2013) found that men in Pakistani communities refused for an average of five years. When men did eventually seek testing, it was most often at the urging of friends, not partners or family.
Blell's 2018 study, the only dedicated UK research on British Pakistani Muslim men's experiences of infertility, documented the profound discomfort many men experience when faced with the possibility of male factor infertility, and how this can lead to concealment that shifts the entire investigative burden onto women.
This is not a judgement of individuals. It reflects the weight that cultural expectations of masculinity place on men, and the way that weight is absorbed by women in the relationship.
Understanding this dynamic, that fertility involves two people, that male factor is common and treatable, and that testing both partners is standard practice, is part of holding the medical picture clearly.
How does age affect fertility?
Fertility declines with age in women. This is biological reality, though the way it is discussed can cause unnecessary anxiety. The decline is gradual through the 20s and early 30s, and becomes more significant from the late 30s onwards. This does not mean there is a cliff edge at any particular age. It means that for women in their late 30s or 40s, time matters more and seeking help earlier is reasonable.
What is the emotional experience of trying to conceive?
when it is not happening quickly is one of the most emotionally demanding experiences a person can go through. The hope and disappointment that arrives with each cycle, the weight of expectation from family and community, the isolation of not knowing who to talk to, these experiences are real and significant.
In a survey of Indian women with PMOS (n=4,409), anxiety and depression were the most commonly reported comorbidities.
Research from India (n=1,530 women with delayed conception) found 54% experienced psychological distress, 20% reported depression, and social isolation was a significant risk factor.
Your mental and emotional health during this time matters. It is not secondary to the physical investigation.
How did this land with you?
Read next
Reviewed by clinicians
Authored and reviewed by clinicians from the founding team. Information only, not personalised medical advice.