DS is 6 weeks old. I've been dairy free since birth and soy free for almost 2 weeks. My first had MSPI so I went dairy free preemptively with #2, and eliminated soy after his poops turned green and mucousy. The pedi tested them for blood a couple weeks ago at a weight check and they were negative. Tonight, he's had two poops with some red blood streaks. Is it a possibility the soy could still be in his system and cause blood to pop up suddenly (this is the first time he's ever had visible blood)? I've been so careful reading labels and don't think I've ingested any dairy or soy by accident. My only other immediate thought is nuts, I ate a handful this afternoon and snacked on granola w/ nuts too. I'll call the pedi in the morning, but thought I'd check here. Thank you!