Baby sleeping more ?

Rana • Married a year and a half, pregnant with first child.
The last few days I've noticed much longer gaps of little to no movement. Sometimes over two hours, but then there will be a flurry of movement. I went to doc on Friday to check and she was fine. It's very annoying to have to worry every few hours Cuz I'm not sure if that's just her being quiet or something is wrong. Has anyone else had this ?