In the Berserk anime, what was Guts's interpretation of Casca's "woman issue" in episode 11? Back in Episode 11 of the Berserk anime, Casca and Guts fell from a high cliff into a river. Later, Guts found Casca suffering from high fever, so he decided to warm her body. While undressing her, he saw something (as I saw) like blood flowing down (I couldn't understand from where), then he said:


  Now I understand. Must be hard, being a woman


What did Guts mean when he said that?

I don't think she was having periods, but then what else could it be specific only to a woman.
If you read the manga and watch the second film it's much clearer that she has her period and that it's menstrual blood. 

The anime couldn't show sexual organs which is why it's so vague. I didn't understand when I first watched the anime either.   

Hope that helps!