# · Period Tracker

Tap the moon icon on the menu. (Click the house icon to open the menu if you're using a phone first.) Input your latest period dates to calculate and predict the start date of your next period.

![](/files/0tK1FuqChquwSbkl7KBl)


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# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://en.faq.hearty.me/tutorial/periods.md?ask=<question>
```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
