I ended up getting a CT scan which reveled an 8mm stone in my left kidney. I was given the option of surgically removing the stone and went that route because the chances of passing a stone that large were only about 30% and didn't sound fun anyway!
Thank you for this information because this is something I will watch out for in the future. I know my endo is severe and I often worry about it harming the organs that it attaches to. I have a feeling the reason I got a stone is because of chronic dehydration caused by the digestive issues I get from endometriosis.

You should research endometriosis of the ureter and kidney. A symptom of that is blood in the urine. I know it's expensive but definitely worth it. Left untreated the endo can actually lead to renal failure. I hope that's not the case but probably a good thing to rule out. Let me know what happens. Best of luck and stay strong! https://www.ncbi.nlm.nih.gov/pmc/articles/PMC35...