Welcome to Twilight Saga Answers. What would you like to know?

Bella does have one its just never mentioned in the book until, breaking dawn when she figures out shes pregnant because she had her period a couple days before the wedding but she had not had it during the honey moon when she realized Alice had packed her tampons in her suitcase!

If you do want to know when Bella's period is, I would like to ask "WHY?"

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