thanks for query.
I think you will miss interpreat the feeling the movements as baby movements as it never starts from the day you were pregnant.
The movements of baby is a flickering sensation for a while just like sensation in our abdomen when we feels hunger.
Usually is started after 5-6 months of pregnancy
It's feeling of intensity depend upon water content in amnion ,fat on abdomen,it's position etc.
You have undergone tests & if your Sonography
shows normal growth for the period nothing to worry about movements.wish you a happy child thanks again