I don't want to scare you, but I swear to people the earliest sign our son had ADHD was in the womb. He seriously did not stop kicking or punching, even when he got lodged in my ribs (and that made him REALLY angry). It was 24/7 action movie in there! I was miserable and it figured, I went nine days overdue so I had bonus misery. Even my OB was shocked at how active our son was toward the end of the pregnancy. He was active as an infant, quickly kicking himself out of the tightest of swaddling. When he slept, he moved all over the crib. He then became the toddler and preschooler who was the Energizer Bunny.
Our second child was much more normal in the womb and I even got to sleep at night. Her activity level has been nothing like her brother's.
To me, I've seen a direct correlation between womb activity and the child's activity level. Get those running shoes out because you'll be doing a lot of chasing! She's going to be ok, just very spirited! :)