Baby moving less than normal

Gayle & Jesus • We are expecting our 2nd child a little girl. We have a 17mth old little boy. And three older children.
I went to my obgyn and mentioned to him that our daughter wasn't moving very much like she's supposed to. He was concerned put me thru a sono and a nst which on that she barely even moved at all even on my side. What has some moms gone thru at this point? I'm 35wks and 1day as of right now. She's growing fine I believe but what has the Dr told u all to do?