fertility that comes and goes

Overview

Fertility that comes and goes means your ability to conceive may change from month to month. For some women, this is a normal part of reproductive life. For others, it can be a sign of an underlying condition that affects ovulation. If you are trying to get pregnant, it's helpful to understand these patterns and talk to a healthcare provider.

Yes, many women have irregular cycles or missed ovulation occasionally. It becomes more common as you approach menopause. But if it's consistent and you're trying to conceive, it's important to seek advice.

It can affect anyone with a menstrual cycle, but it is more common in women with polycystic ovary syndrome (PCOS), thyroid problems, or those approaching menopause. It may also appear after significant weight changes or high stress.

Symptoms

Common symptoms

• Irregular periods (cycles shorter than 21 days or longer than 35 days)
• Missing periods some months
• Changes in the length of your cycle from month to month
• Difficulty predicting when you ovulate
• Unexpected spotting between periods
• Changes in menstrual flow (lighter or heavier)
• Trouble getting pregnant after trying for several months

Symptoms in children

• This topic is not relevant to children. Fertility changes begin at puberty.

Symptoms in older adults

• In perimenopause (typically late 40s to 50s), fertility can become unpredictable before it ends completely. Periods may be irregular, and ovulation may happen only some months.

Causes

Main causes

• Hormonal imbalances (for example, polycystic ovary syndrome or PCOS)
• Thyroid disorders (underactive or overactive thyroid)
• Perimenopause – the years leading to menopause
• High levels of stress or sudden weight changes
• Prolactin excess (a hormone that affects ovulation)
• Structural issues inside the uterus or fallopian tubes

Risk factors

• Age over 35
• Family history of early menopause (before age 45)
• Irregular cycles since puberty
• Eating disorders or very high physical training
• Obesity or underweight
• Chronic illness such as diabetes or autoimmune disease

When to see a doctor

See a doctor urgently if:

• If you have severe pelvic pain or heavy bleeding, seek care promptly.
• If you suspect you might be pregnant and have any pain or bleeding, see a doctor today.

Book a routine appointment if:

• If you have been trying to conceive for more than 12 months (or more than 6 months if you are over 35), it's time to talk with a doctor.
• If your periods have been irregular for 3 months or more, schedule an appointment.
• If you notice new symptoms such as hair growth on your face or chest, acne, or dark skin patches, mention these to your provider.

Diagnosis

Your doctor will start by asking about your medical history, your cycle, and any symptoms you've noticed. They may ask you to track your periods and symptoms for a couple of months before any tests are done.

Tests that may be done

• Blood tests to check hormone levels (such as thyroid, prolactin, and ovarian reserve)
• An ultrasound scan of your ovaries and uterus
• A pelvic examination
• A review of your lifestyle, diet, and stress levels

What to expect at your appointment

The process is gradual. You may need to visit your doctor a few times. Be prepared to answer questions about your cycle, health, and any medications you take. No test is painful, and all results will be explained clearly.

Treatment

Treatment depends on the underlying cause. The goal is to support your overall health and improve your chances of conceiving. For many people, simple lifestyle adjustments help regulate cycles. Others may need medical support to trigger ovulation.

Self-care at home

• Track your cycle, cervical mucus, and basal body temperature to learn your patterns.
• Manage stress with mindfulness, yoga, or talking to a counselor.
• Aim for a healthy weight – even a 5% to 10% change can help if you have PCOS.
• Limit alcohol and caffeine to moderate amounts.
• If you smoke, try to get help with quitting.

Medical treatments

Medical treatments may involve hormone therapy to make your cycle more regular, medications to stimulate ovulation, and assisted fertility procedures such as intrauterine insemination (IUI) or in vitro fertilization (IVF). The right choice depends on your specific situation, age, and test results. Your doctor will discuss all options and refer you to a specialist if needed. Never start any fertility medication without being prescribed for you by a medical professional.

When is surgery considered?

In some cases, surgery may be recommended – for example, to remove uterine fibroids, polyps, or areas of endometriosis. Surgery for PCOS (ovarian drilling) is less common now. Your doctor will explain whether surgery might help, and if so, what it involves.

Living with this condition

Living with unpredictable fertility can feel like an emotional rollercoaster. It helps to have open conversations with your partner, close friends, or family about what you're going through. You may also find comfort in writing in a journal or setting small goals that give you a sense of control.

Lifestyle tips

• Take time for activities you enjoy – hobbies, reading, or time in nature.
• Get regular exercise – aim for about 30 minutes most days.
• Prioritize sleep and try to keep a regular sleep schedule.
• Consider a support group – online or in person.
• Be kind to yourself – fertility is not a reflection of your worth.

Diet and exercise

Eating a varied diet with plenty of fruits, vegetables, whole grains, lean proteins, and healthy fats supports your hormones. Moderate exercise, like brisk walking, is good – but be careful about very intense training, which can disrupt cycles. Avoid crash diets and aim for steady, balanced eating.

Mental health and emotional wellbeing

Concerns about fertility can cause stress, anxiety, and low mood. These feelings are very common, and it's okay to ask for help. A counselor who specialises in fertility can help you develop healthy coping strategies. Remember that your wellbeing matters, no matter the outcome.

Prevention

You can't prevent age-related fertility changes, but you can reduce some risk factors. Maintaining a healthy lifestyle, managing chronic conditions, and avoiding smoking can help support your fertility. It also helps to be aware of your cycle early on, so you notice any changes early.

Vaccines

Staying current with recommended vaccines – such as HPV and COVID-19 – protects your overall health, including your reproductive health. Talk to your healthcare provider about which vaccines are right for you.

Screening programmes

Regular gynecological check-ups and screenings for sexually transmitted infections are important for reproductive health. If you are over 35 or have specific symptoms, your doctor may suggest additional screening, like an ultrasound to assess your ovarian reserve.

Complications

If left untreated

• If an underlying condition (like PCOS or thyroid disease) goes untreated, it may continue to affect your fertility and could increase the risk of other health issues, such as diabetes or low bone density.
• Delaying evaluation may mean missing the most effective window for fertility treatment, especially as age advances.
• Untreated structural problems (like fibroids or polyps) might make it harder to get or stay pregnant.

Long-term outlook

Many people who experience fluctuating fertility go on to have children, with or without medical help. The important thing is to seek advice early, stay proactive about your health, and remember that fertility is not always constant – and that's okay. There are many paths to building a family.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.