Baby has been nursing for almost 6 hours help

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My daughter is 4 weeks old and she hasn't slept since 4 am and it is now 10 am. She just wants to nurse frantically. She is pulling at my nipple, flailing around, scratching her self. She sometimes falls asleep for a few mins but wakes right back up doing the same thing. What's going on? She has flailed around sometimes before but never this bad. I think she is so extremely tired now that she can't fall asleep. I've never had a problem with my supply before. She has tons of dirty and wet diapers. Maybe I'm not producing enough milk for her today? Idk help! Her gas hasn't been too bad either.