Help! Why does my baby’s poop look like this?

Michaella

My son is 4 months and is exclusively breastfeeding. We haven’t introduced any solids to him yet. There also hasn’t been any changes in my diet. No cracks or bleeding on my nipples either. My hubby and I stared at them for the longest time to make sure they’re not moving! They honestly look like tiny worms. Contacted his doctor already and we sent photos, just walking for the phone call to see what they say! Has anyone seen something similar from their baby?