Did they explain why she couldn't have children???? Cause if she couldn't have children in...

She ate some kind of plant that stops her period and she can’t get pregnant

if i remember correctly it was that she ate mugwort after her first period because she didn't like bleeding every month (understandable tbh) so her periods stopped aka she's infertile

SPOILER ALERT



It's not really because she didn't want to bleed, she just didn't know what was happening to her body. Nobody was there to explain menstruation to her. She thought she was sick because the bleeding isn't stopping so she ate the mugwort, which was known to stop bleeding.

The second lifetime, she was scared of the chances that she may end up marrying her bastard past husband again and getting pregnant, so she took the medicine again.

So here's another question did she injest mugwart constantly? Cause apparently mugwart was used to be an abortion drug back then. My friend also stated if she continuously injested it then it would make it quite hard for her to get pregnant since the egg can attach.

Can't*

I don't remember it being an abotion drug but she did intake mugwort for a while during her early menstruation. She stopped taking them when her period also stopped. Without her period, she became infertile.

ADDITIONAL SPOILER INFO
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There's a secret medicine that can cure her. She found the recipe for this during her past life, when she was older and free from her marriage. So pregnancy isn't impossible.

If we're talking about the real effect of mugwort then it causes the bleeding as in menstruation
Usually it's given to regulate period...
But here in this story it stops period completely if it's consumed for a very long time and period won't come back unless some kind medication is taken
So this information in the story is completely made up

Thank you guys so much for answering all my questions! Plus teaching me new information it's much appreciated.