I have a question about the Mishnah Niddah

So this a really specific question and i apologize if im coming off as ignorant but i didn’t find an answer to this question/ and or didn’t understand it.

So through the articles that i went through from Chabad.org, etc. and reading through the Mishnah Niddah itself, there is stated, that a married woman has to go to the ritual bath to cleanse herself of Impurity, after her menstrual cycle.

Now i understand this, but what i couldnt find an answer to is:

Does an unmarried woman have to go to a ritual bath too after her menstrual cycle or not. I understand that you would be impure either way, unmarried or not. I have read that married woman would go, but i never found out if an unmarried woman should do the same or not/ and or is considered pure after 5 + 7 days. Or i just didnt understand correctly.

So i would be very grateful if someone could answer this and shed light to my intolerance.