4 weeks 4 days & feeling flutters?

Jenny • Mama to my sweet daughter and expecting #2 in July!
Let me preface by saying I know my baby is the size of a poppy seed so obviously I know I don't feel baby. Has anyone felt flutters? Only way I can describe it is like butterflies! Not cramping just a flutter feeling every now and again? Any idea what that is and has anyone else felt something like this??