fluttering!!!

Trista • Im married i have 2 kids im a stay at home mother and wife

so i have felt something in my belly moving and i can see my belly move at first i thought it was just twicting but this is lasting longer and when i press on my belly a little it will happen but ive took a test several weeks ago and it said negative and i had a period last month is it possible to be pregnant?? or could it be something else?