symptom-guides

Spotting a Week Before Your Period: Causes and What to Track

Spotting a week before your period can stem from progesterone decline, implantation, or late ovulation spotting. Learn what to log and when to follow up.

What Is Happening in Your Cycle a Week Before Your Period? One week before your period, you are typically in the late luteal phase. Ovulation has already occurred, progesterone levels are at or near their peak, and the body is either sustaining a pregnancy or preparing to shed the uterine lining. It is a hormonally active window, which is why spotting in this phase has several plausible explanations. Understanding the cause requires knowing your cycle. How long is your typical cycle? Do you know roughly when you ovulate? Was this cycle different from your usual pattern? The answers narrow down the likely source. This guide is for educational purposes only. It is not a substitute for medical advice. Common Causes of Spotting a Week Before a Period Progesterone Decline Progesterone rises after ovulation to maintain the uterine lining. When progesterone drops at the end of the luteal phase, it triggers menstruation. If progesterone drops earlier than expected, or the luteal phase is short, the lining can begin to shed before the full period begins. This causes spotting a few days to a week before the main flow. This pattern often looks like: a day or two of spotting, a day of near not