Please help-

I am taking care of a little girl, she is about 13 weeks old. She was very sick when she first came into our home, but she is now very healthy, active, energetic, and loving. Today, I noticed her pee is a strange color- it is usually clear but today it was a brownish pink color. It frightens me, I hope it's not blood!

She eats a variety of vegetables and some fruits, and gets a couple of pecans a day as a treat. I recently introduced acorns in her diet. Could that be the cause for her discolored pee? And if so, is it something I should worry about?

Acorns are the only change I have made to her diet. She is not acting like she is sick and hurting in any way, she's just as spunky as usual.

Thank you,

Katie