My 2.5 month old baby is always grunting and it sounds like she's straining her voice. she also pushes her legs straight out. what does this mean?

Normal events: At this age infants make a wide collection of sqeaking & grunting sounds that have no significance. They have rubbery, pliable airways that vibrate to make additional sounds & they have no social skills, they don't care if the noise they make is odd or not. The legs placement response is also normal until 6 -9 mo. When it becomes less frequent or dissapears.