How to track your menstrual cycle
A simple 4-step guide, especially for teens with new or irregular cycles.
- 1
Mark Day 1 of your period
The first day you see red flow is Day 1 of your cycle — not the last day of your last period.
- 2
Log every day of bleeding
Note the flow: light, medium, or heavy. Also note the color and any clots.
- 3
Track symptoms & mood
Cramps, mood, headaches, discharge, energy, sleep, cravings. The more you log, the more patterns show up.
- 4
Repeat for 2–3 cycles
Once you have a few cycles logged, you'll see your average cycle length (usually 21–35 days) and can predict your next period.
Let Bloomy do the tracking for you
Free, private, made for teens. Automatic cycle prediction from day one.
Why teen cycles are often irregular
For the first 1–2 years after menarche, cycles can range wildly — 20 days one month, 40 the next. That's completely normal. Your hormones are still finding their rhythm. Tracking with an app like Bloomy helps you spot your personal patterns faster and know what's typical for your body.