Hello! We've been together for two and a half months, when the baby is…

Hello! We've been together for two and a half months, when the baby is in clothes (ordinary, not heavy) everything is fine, she stretches towards toys feels boundaries normally In general, she orientates herself in space.... But as soon as you take off the clothes, she throws her arms out to the sides and starts to get nervous like she's lost (it was like that until a month ago, then it didn't notice) Is this normal at our age, will it pass? The neurologist had no complaints about development. She said she's very hyperactive...