GREASY WATERY POOP

hi. 1 yr and 3 months si baby. usually kasi pag ayaw niang kumain for a week at nglalaway cia nasa teething stage cia i think. tapos mdyo mlambot din ung poop nia. but yesterday i observed that parang ngkakadiarhea cia. nkailang palit din cia kahpon then ung last nia kagabi is parang oily or greasy na tubig ung lumabas sa kanya. tapos nagsuka din cia. Normal lang ba un ?