Gnawing at fist all the time - should I be worried?

Grk_Natasha

I am starting to freak out now. DD is almost 11 weeks and lately she never seems satisfied. I EBF, pump maybe once or twice a week when she sleeps really long stretches at night. And she is putting her first in her mouth all the time. Sometimes she's crying and gnawing at it (like today when I left for two hours to go run errands). So when I went to feed her she latched on for a little bit then tried to get her fist in her mouth again. I felt three let downs...not sure if that means anything.

At her 6 week visit, she was gaining great, above average.