Signs Your Period Is Coming
Your body usually gives you a few days' warning. Here are the common signs your period is on its way, how early they start, and how to tell them from early pregnancy.
The most common signs your period is coming are cramps, bloating, tender breasts, mood swings, food cravings, and a change in discharge, usually starting a few days to a week before bleeding. These are PMS symptoms, driven by the hormone drop at the end of your cycle, and they ease once your period begins. This guide walks through the signs, how early they show up, and when to check with a doctor.
What are the signs your period is coming?
The signs your period is coming are the cluster of physical and emotional changes known as PMS, which build in the days before bleeding starts. You will not get all of them, and they vary cycle to cycle, but most people notice a familiar handful each month.
They are also extremely common: the Office on Women’s Health puts premenstrual symptoms at as many as three in four women at some point.
For the full breakdown of each one, our luteal phase symptoms guide goes deeper.
How many days before your period do signs start?
For most people, premenstrual signs show up in the week or so before bleeding, often peaking in the last few days. They are driven by the drop in estrogen and progesterone at the end of your cycle, which the NHS links to PMS, and they usually ease within a day or two of your period starting.
The clinical definition is narrower than what most people feel. The Office on Women’s Health describes PMS as symptoms in the five days before your period for at least three cycles in a row, ending within four days of it starting. Our guide to when PMS starts maps the full timeline.
If you want the date itself, our free period calculator predicts when your next period is due from your own cycle length.
Period signs are not random: they are your hormones giving you a few days’ notice before the main event.
Signs your period is coming vs early pregnancy
Early pregnancy and PMS share a lot of signs, which is why this is so hard to call. There is a real reason for that: the Cleveland Clinic notes that the hormones released after ovulation are very similar to the ones that continue if you are pregnant.
The clearest answer is still your period itself: if it arrives, those were premenstrual signs. If it is late, take a test. Most home tests are reliable from the first day of a missed period.
And if your period is already late and you are trying to read these signs for an answer, that is its own question: what the signs mean when your period is late covers which ones point where, and why none of them settle it. For the other reasons a period runs behind, see why your period is late.
When should you see a doctor?
Premenstrual signs are normal, but they should not run your life.
Severe mood symptoms in particular are worth naming out loud. The NHS lists them among the signs worth seeing a doctor about, and our guide to period mood swings covers the PMS versus PMDD distinction in detail. PMDD is a recognised, treatable condition rather than something to cope harder with.
Signs your period is coming FAQ
The takeaway: the signs your period is coming are the familiar PMS cluster, cramps, bloating, sore breasts, mood shifts, cravings, and discharge changes, that build in the days before bleeding and ease once it starts. Learn your usual signs, and your period stops being a surprise.
