40 weeks pregnant, all i want to do is eat?

is this normal??? i just feel like snacking alll dayyy! ive never been like this before i was pregnant, but moreso these last weeks of pregnancy.. i could eat all day. i dont think i eat too much, but have something different every hour or so, only small things, like an apple, or a couple of biscuits, maybe some yoghurt,cereal or noodles? even when i am full. its annoyingg.