Busy Baby

My LG is 7 weeks old and just never stops moving her arms and legs. Even when she is sleeping , her arms are always moving in all directions and her legs too. She doesn't cry she just doesn't stop moving.When I swaddle her she screams her head of and try to wiggle her way out as she just moves her arms and legs until she is loose. Sometimes she is hungry and she moves her head from side to side and i can not get the bottle in her mouth , it takes a few minutes sometimes and when the bottle is in she drinks as if I haven't given her a feed in days.