What did "courses" mean, exactly?

[rand-omness]

(Just began Winter's Heart, please do not spoil)

My question is about this quote.vvvv

"The Warder bond carried what Elayne had been sensing all morning. Frustration, irritation, determination. Some of that might have been a reflection of herself, though. They mirrored each other in surprising ways since the bonding, emotionally and otherwise. Why, her courses had shifted by more than a week to match the other woman's!"

By "courses", is Elayne implying that her menstrual cycle has shifted to match Birgitte's?

[Orderofolde]

Yes, that's what it means, and you created identical posts btw.

[rand-omness]

Whoops, sorry.