Is eating gelatin concettered vegetarian?

I am lacta-ova vegetarian and eat skittles and stuff that has "gelatin" or pig intestence in it..its not actually meat so i dont have a problem with it..but being vegetarian u do eat stuff like that without knowing it i mean u dont read every pakkage and make sure it doesnt have gelatin in it ..so i mean its not red meat so i dont have a problem with it so i am still veg. right??? I mean even marshmellows have it in there!!