Reticulated Python, blood in urates

Hi
I've got a year old Reticulated Python and I'm regularly noticing some blood (or what I think is blood) in her urates.
Based on the attached pictures, is this something I should be worried about? Has anyone else experienced this with their Python?
She's captive bred, eating just fine, active as ever and goes to the toilet regularly, however she sometimes twitches her head, often when she's about to urinate.
Thanks in advance

https://ball-pythons.net/gallery/fil...7/img_2833.jpghttps://ball-pythons.net/gallery/fil...7/img_2824.jpg