16 week old bf dd has pooed twice in quick succession this morning, and both of them were quite mucuosy. They were mainly yellow and runny, but did contain jelly; is this normal?! Btw, she seems ok in herself and has no temperature. Fed MAMMOTHLY last night between 630 and 11 (200 mls ebm, 100ml of formula, plus a long breast feed)...could this be a side effect?