My uterus is really far back and so movement has always been more difficult for me to feel. Trust the doctors, it's normal to worry during pregnancy. Good luck.
I was having some issues with movement also but found out that I was not eating enough so when the movement is slow I get a full meal. I have horrible indigestion, acid reflux, I get full quickly and most food makes me sick but as soon as i drink or eat something sweet I get the happy dance from my angel. Check to see if your intake is sufficient.
It depends on how your uterus is tilted rather or not you feel alot of movement. ..... I complain at first about nit feeling movement now he don't stop moving