Dark streaks in stool?

So I’m 23w3d and I noticed some dark streaks in my stool today. Not a lot, just a thin line of dark. I did eat a lot of spinach last night and I read that could be a culprit. I am going to call my OBGYN on break ( just went in this morning and had no complaints of course as the bowel movement happened after my appointment!) just wondering if anyone else had gone through something similar and all was okay!