Spotting Before Your Period

What counts as spotting?

Spotting is any light bleeding that happens outside your normal period. It’s usually so light you only see it when you wipe or spot it on underwear, and it rarely needs more than a panty liner. The colour ranges from brown (older blood that has taken its time leaving the body) to pink (a little fresh blood mixed with cervical fluid) to light red. A true period is different: it starts light but builds into a steadier, heavier flow that fills pads or tampons, lasts several days, and usually turns a deeper red. In short, spotting is about volume and pattern — light, brief, and not building — while a period is heavier and follows a predictable arc. If you want to dig into what different shades mean, our period blood colour guide breaks it down shade by shade.

7 common causes of spotting before your period

1. Hormonal fluctuation (premenstrual spotting)

In the days before your period, progesterone drops as your body prepares to shed its uterine lining. That hormonal dip can cause the lining to start breaking down a little early, releasing a small amount of blood before the main flow gets going. The result is a day or two of light pink or brown spotting that then rolls into your actual period. For some people this is simply how their cycle winds down. But if you often spot for 2 or more days before your period, mention it to a doctor, especially if you also have painful periods or trouble getting pregnant. Studies have linked this pattern with endometriosis.

2. Ovulation spotting (mid-cycle)

Some people see light spotting around the middle of their cycle, when an ovary releases an egg. The brief shift in oestrogen around ovulation can cause a small amount of bleeding — usually just a spot or two of pink or light brown, lasting a day or two. Strictly speaking this happens mid-cycle rather than right before your period, but if you have a shorter cycle it can feel like “before my period.” Ovulation spotting often turns up alongside other fertile-window signs, such as clear, stretchy cervical mucus or a one-sided twinge.

3. Implantation spotting (early pregnancy)

If a fertilised egg implants in the uterine lining, it can cause a tiny amount of bleeding — what’s known as implantation spotting. It typically happens around 10–14 days after ovulation, which lands close to when a period would be due, so it’s easy to mistake one for the other. Implantation spotting is usually very light, pink or brown, lasts only a day or two, and doesn’t build into a heavier flow. Not everyone who conceives experiences it, so its absence doesn’t rule pregnancy out. If you’re trying to tell the two apart, our guide to implantation bleeding vs a period walks through the differences in detail.

4. Hormonal birth control or missed pills

Hormonal contraception is a frequent cause of spotting, especially in the first few months on a new method while your body adjusts. This in-between bleeding is often called breakthrough bleeding. Combined pills, the mini-pill, the implant, the hormonal IUD, the patch, and the ring can all cause it. Missing a pill, taking it late, or starting a new pack off-schedule can trigger spotting too, because it briefly changes your hormone levels. It usually settles as your body gets used to the method, but persistent breakthrough bleeding is worth raising with whoever prescribes your contraception.

5. Stress

High or sustained stress can knock the hormones that run your cycle out of their usual rhythm. The result might be light spotting, a period that arrives early or late, or a cycle that just feels off. Big life changes, poor sleep, illness, intense exercise, and significant weight changes can all have a similar effect. A one-off stressful patch followed by a little spotting is rarely a concern, but if stress keeps disrupting your cycle it’s reasonable to talk it through with a provider.

6. Perimenopause

In the years leading up to menopause — perimenopause — hormone levels swing more unpredictably, and cycles often become irregular. Spotting between periods, lighter or heavier flows, and cycles that arrive closer together or further apart are all common during this transition, which usually begins in the 40s but can start earlier. While these changes are a normal part of perimenopause, new or unusual bleeding patterns are still worth mentioning to a provider so anything else can be ruled out.

7. Other causes (fibroids, polyps, infection)

Spotting between periods can also come from other common causes such as uterine fibroids, cervical or uterine polyps, or an infection. These aren’t things you can sort out from symptoms alone, and they aren’t something this page can diagnose. If your spotting is new, persistent, or comes with other symptoms — pain, an unusual smell, or bleeding after sex — that’s a clear cue to see a healthcare provider, who can examine you and find the cause. Spotting from these causes is very treatable once it’s identified.

Spotting vs a real period vs implantation bleeding

Three quick questions usually tell spotting apart from a true period. How much? Spotting is light — a few spots or a smear, handled by a liner — while a period builds to a flow that fills pads or tampons. How long? Spotting fades within a day or two; a period runs for several days. What colour and pattern? Spotting is often brown or pink and stays light, whereas a period usually turns bright or dark red and gets heavier before it tapers.

Telling spotting apart from implantation bleeding is trickier because both are light. The main clues are timing and trajectory: implantation spotting tends to come around 10–14 days after ovulation and stays light without building, while premenstrual spotting usually rolls straight into your period and a true period grows heavier. Because the windows overlap so closely, the most reliable way to settle it is to wait until your period is due and take a home pregnancy test; our Pregnancy Test Calculator shows the earliest day a result is likely to be reliable. If your period simply hasn’t turned up, our late period guide covers how late is normal and what can throw timing off, and the DPO day-by-day guide maps what’s happening across the two-week wait after ovulation.

A simple habit makes all of this far easier to read: jot down — or log in our free private tracker — when spotting appears, what colour it is, how long it lasts, and where it falls in your cycle. After two or three cycles a pattern usually emerges — perhaps you reliably get a day of brown spotting right before your period, or a single pink day around mid-cycle. Knowing your own baseline is the most useful thing you can do, because it turns “is this normal?” into “is this normal for me?” It also gives a provider something concrete to work from if you ever do need to ask about it. Tracking won’t tell you the cause on its own, but it makes anything out of the ordinary much easier to spot.

When to see a provider

Occasional light spotting before a period is usually nothing to worry about. But it’s a good idea to check in with a healthcare provider if you notice any of the following:

• Any spotting or bleeding between periods, even if it’s light.
• Bleeding or spotting after sex.
• Spotting that comes with pain, an unusual or unpleasant smell, fever, or unusual discharge.
• Any bleeding or spotting after you’ve gone through menopause (12 months with no period).
• Spotting that’s suddenly much heavier, more frequent, or different from your normal pattern.
• Spotting in pregnancy, which should always be reported to your provider.
• Get help the same day if you’ve recently missed a period and have unusual bleeding with pain anywhere in your tummy. This could be a sign of an ectopic pregnancy (in the UK, ask for an urgent GP appointment or call 111).

None of these automatically mean something is wrong — they’re simply signs that a quick conversation with a provider is the right next step. They can examine you, ask about your cycle and history, and find the cause, which is something a calculator or article can’t do.