Hello ??? I've been feeling lightness in my belly lately. Nothing pull…

Hello ??? I've been feeling lightness in my belly lately. Nothing pulls or presses anywhere. The last month, weeks from 35 all the time it was hurting in my back, lower abdomen and between my legs. I think that this is a sign of things to come and the body is preparing. Now, there's lightness and I feel the baby's movements. Should I be worried? Or is this normal before childbirth???‍♀️