Poo problems sry tmi

Woke up this morning, my lo is 4 1/2 months old, she had a poo, everything seemed normal but when i looked in the diaper i saw all these little red stringy looking bits all throughout. Wtf??? Ftm ebf she tasted banana before and yesterday she ate a small bite of banana. (we are seeing the dr on the 18th) I never noticed her acting strange or sick yesterday or last night. She didnt seem disturbed much by the actual bm in question. It was pretty much a typical big poo, except these red string looking tiny little bits im afraid are blood? Or...?😰