How long without a period before worrying?
A delay of a few days to two weeks is common and rarely worrying. Beyond three months without a period, outside of pregnancy, it is called amenorrhea and you should see a healthcare professional. In some cases, you should not wait three months.
The first reflex: a pregnancy test
If pregnancy is possible, it is the first thing to check, from a few days late. A urine test is reliable from the expected date of your period. Everything else on this page assumes that is not the cause.
The landmarks, from ordinary to serious
A few days late. Nothing abnormal. Ovulation may have shifted for a thousand reasons: stress, travel, fever, a change in rhythm. Your period comes a little later, that is all.
Two to six weeks late. A long cycle. Common after stopping hormonal contraception, in adolescence, in perimenopause, or in women with PMOS (formerly PCOS). Log the date your period finally arrives: that is the information that matters.
More than three months without a period. This is called amenorrhea. It is not an emergency, but it is the threshold where a consultation becomes necessary, even if you feel fine. The body has a reason to stop ovulating, and it is better to know it.
Common causes of a missing period
- Stopping the pill, hormonal IUD or implant: the cycle can take several months to find its rhythm again.
- PMOS: ovulation happens rarely, sometimes not at all for several months.
- Significant weight loss, a too-restrictive diet, very intense sport: the body puts reproduction on hold.
- Prolonged stress, grief, a major life upheaval.
- Breastfeeding.
- Perimenopause, then menopause.
- A thyroid disorder or excess prolactin, a hormone that blocks ovulation.
When to see someone without waiting three months
Some situations justify a quick appointment, without waiting for the three-month threshold:
- strong pelvic pain on one side, with or without bleeding, especially if pregnancy is possible: this can be an emergency;
- you have never had a period by age 15;
- a missing period together with unusual headaches, vision problems, or discharge from the breasts;
- rapid, unintended weight loss;
- you are trying to conceive: the sooner you understand why you are not ovulating, the sooner you can act.
In every case, note the date of your last period and the one before. A doctor will ask that first, and many women no longer remember. Lovae is a wellbeing app, not a medical device: it keeps those dates for you, it does not replace the consultation.
Sources
- Qu'est-ce qu'une aménorrhée et quand faut-il s'inquiéter de l'absence de règles ? (Assurance Maladie, ameli.fr)
- Aménorrhée secondaire, arrêt des règles de plus de 3 mois : quelles causes ? (Assurance Maladie, ameli.fr)
- Stopped or missed periods (NHS)
Pages consulted on 4 September 2026.