If your period starts in class it's unlikely to be heavy enough to be a problem, just excuse yourself from class and go to the bathroom. A teacher cannot stop you from using the bathroom if you need to, so don't worry.
you will get your period once you hit puberty
lesson
The word class is not an abbreviation, its a word. You may see an abbreviation 'class.' using a period to indicate that it's an abbreviation. If it is used with the period, it's short for 'classification'.
every class
A period could represent a decimal point.
Bella had her biology class during the second period.
class
Speak to your teacher privately
walk up to the teacher and tell him/her
periodo de clase
jnkklokl
in what time period?