chrissy- Ash started doing the same thing last week and I was wondering that too. I didn't know if it was teething early, going thru another growth spurt and was hungry or just doing it for comfort. No teeth have appeared so i ruled that out, I think its a bit of both hunger and comfort sucking in Ashleigh cause sometimes she'll be looking for boob and other times just content to suck her fist or whatever else. She's not into a dummy so i presumed this was her thing instaed.