I feel this ball like the size of a green olive where my uterus is i layed down and starting pressing on my lower tummy basically where a uterus is and i felt that ball thing its squishy and one second its in one side and the other second its in another side usually is in the middle though...I searched up what could it be all it told me was pregnancy but ive been having all my periods so its not that. Has this ever happened to anybody?