Orange crystals

Myia

So ya know after you have your baby, the doc/ nurses say its normal to have a little orange crystals in the urine/ diaper for a few days after birth? Well my daughter is 2.5 months now and has had it about 4 times over the last 3 weeks. I asked her pediatrician why this was happening and she couldn't give me an answer, does anyone have any experience with this or idea??