During the days before your period, the lining of your uterus has been thickening, building a soft, blood-rich layer in case a pregnancy happens. When it doesn't, hormone levels drop, and that lining is no longer needed. Your body sheds it, and it exits through the vagina over the following several days. That's a period.
What It Actually Looks Like
Period blood isn't always bright red like a cut. It can be dark red, brownish, or even slightly pink, especially at the very start or end. It may look thicker than blood from a scrape, sometimes with small clumps, this is normal tissue from the uterine lining, not a sign of a problem.
How Long It Lasts
- A typical period lasts between 3 and 7 days.
- Flow is usually heaviest in the first 1-2 days and lighter toward the end.
- Total blood loss across an entire period is usually just a few tablespoons, even though it can feel like more.
Cramps
Cramps happen because the uterus is a muscle, and it contracts to help push the lining out. Mild to moderate cramping in the lower belly, sometimes spreading to the lower back or thighs, is common and normal. Chapter 15 (Managing Pain Safely) covers ways to ease this comfortably.
Reassurance
- You cannot feel your period "happening" the way you feel a cut or bruise. Most girls only notice it once they see or feel wetness.
- It does not hurt to bleed, cramps are a separate, related thing, and not everyone gets them.