CAPE CANAVERAL, Fla. — NASA’s new record-setting astronaut said Wednesday that aside from sore muscles and trouble with balance, she’s readjusting well to gravity after nearly 11 months in space.

Christina Koch, 41, met with reporters in Houston six days after returning to Earth from the International Space Station. Her 328-day mission — which ended last Thursday — was the longest ever by a woman.

Her neck hurt for about a day. “I felt like a 2-week-old who was actually working hard to hold up my own head,” she said.

She considers herself lucky she didn’t have the sore feet and burning skin suffered four years ago by NASA’s all-time endurance champ, Scott Kelly, whose mission lasted 340 days.