Cycle Symptoms Library
Causes, tracking guides, and when to see a doctor — organised by phase.
All content is for informational purposes only and is not a substitute for professional medical advice.
Low Energy During Your Period
Fatigue and low energy during menstruation are normal — but the causes vary.
Learn more →Period Cramps (Dysmenorrhoea)
Period cramps are caused by prostaglandins triggering uterine contractions.
Learn more →Heavy Periods (Menorrhagia)
Heavy menstrual bleeding affects 1 in 3 women.
Learn more →Lower Back Pain Before and During Period
Lower back pain is a common period symptom caused by uterine contractions radiating to the lower back.
Learn more →Blood Clots During Period
Passing small blood clots during your period is common and usually normal.
Learn more →Dizziness During Period
Feeling dizzy or lightheaded during your period is more common than often discussed.
Learn more →Tailbone Pain During Period
Pain near the tailbone or coccyx during your period is a less commonly discussed symptom.
Learn more →Ovulation Pain (Mittelschmerz)
A sharp or crampy pain on one side of the lower abdomen at mid-cycle is called Mittelschmerz — German for 'middle pain'.
Learn more →Discharge During Ovulation
Clear, stretchy, egg-white cervical mucus around ovulation is a normal and important sign of fertility.
Learn more →Bloating Before Period
Abdominal bloating in the days before your period is caused by rising progesterone and fluid retention.
Learn more →Fatigue During Luteal Phase
Intense tiredness in the second half of your cycle is a hallmark of the luteal phase.
Learn more →Mood Swings Before Period
Irritability, tearfulness, and emotional sensitivity in the week before your period are driven by hormonal fluctuations.
Learn more →PMS vs PMDD — Key Differences
PMS and PMDD are both premenstrual conditions, but PMDD involves severe mood disruption that impairs daily life.
Learn more →Breast Tenderness Before Period
Sore, swollen, or tender breasts in the days before your period are a common luteal phase symptom driven by hormonal shifts.
Learn more →Headaches Before Your Period
Hormonal headaches and menstrual migraines are triggered by the drop in oestrogen before your period.
Learn more →Food Cravings in the Luteal Phase
Intense cravings for carbohydrates, sugar, and chocolate in the second half of your cycle are hormonally driven.
Learn more →Hormonal Acne and Your Cycle
Breakouts that follow your cycle — especially around the jaw, chin, and cheeks — are a classic sign of hormonal acne.
Learn more →Sleep Problems Before Your Period
Difficulty falling asleep, waking in the night, and restless sleep in the week before your period are hormonally driven.
Learn more →Nausea Before Period
Nausea in the days before your period is a common but often overlooked PMS symptom.
Learn more →Discharge Before Period
Vaginal discharge changes throughout your cycle under hormonal influence.
Learn more →Low Progesterone Symptoms
Low progesterone may cause irregular cycles, spotting before your period, mood changes, and difficulty sleeping in the second half of your cycle.
Learn more →Estrogen Dominance Symptoms
Estrogen dominance refers to a relative excess of estrogen compared to progesterone.
Learn more →Luteal Phase Defect
A luteal phase defect refers to a shortened or insufficient luteal phase — the time between ovulation and your next period.
Learn more →Period Flu (Feeling Sick Before Period)
Some people experience flu-like symptoms before their period — including body aches, fatigue, nausea, chills, and headaches.
Learn more →Eye Symptoms Before Period (Hormonal)
Some people notice changes in their vision or eye comfort in the days before their period — including blurry vision, dry eyes, or increased light sensitivity.
Learn more →Brain Fog in Perimenopause
Difficulty concentrating, word-finding problems, and memory lapses are among the most distressing perimenopause symptoms.
Learn more →Night Sweats During Perimenopause
Waking drenched in the night is one of the most disruptive perimenopause symptoms.
Learn more →Hot Flashes — Causes and Tracking
Hot flashes affect up to 75% of women during perimenopause.
Learn more →Irregular Periods in Perimenopause
Cycle irregularity is often the first sign of perimenopause.
Learn more →Anxiety During Perimenopause
New or worsening anxiety is a common but under-recognised perimenopause symptom.
Learn more →Joint Pain in Perimenopause
Aching joints — especially in the hands, knees, and hips — are a frequently overlooked perimenopause symptom.
Learn more →Vaginal Dryness
Vaginal dryness is one of the most common symptoms of perimenopause and menopause.
Learn more →Weight Gain in Perimenopause
Weight gain — particularly around the abdomen — is a common complaint during perimenopause.
Learn more →Fatigue in Perimenopause
Persistent fatigue is one of the most commonly reported perimenopause symptoms.
Learn more →Bloating in Perimenopause
Bloating and abdominal distension are common in perimenopause, driven by estrogen fluctuations that affect fluid retention and gut motility.
Learn more →Irregular Periods with PCOS
Polycystic ovary syndrome is one of the most common causes of irregular periods.
Learn more →Irregular Periods
Irregular periods are cycles that vary significantly in length, timing, or flow.
Learn more →Spotting Between Periods
Spotting between periods is light bleeding that occurs outside of your normal period.
Learn more →Missed Period
A missed period is when your expected period does not arrive.
Learn more →Painful Sex
Pain during or after sex — known medically as dyspareunia — can be related to your cycle, hormonal changes, or underlying conditions.
Learn more →Pelvic Pain
Pelvic pain is pain felt in the lower abdomen or pelvis.
Learn more →Hormonal Hair Loss
Hair thinning or loss related to hormones is more common than most people realise.
Learn more →