13 weeks ...scared...nervous

Ashawntie
I'm now 13 weeks and for the past 3 days I don't feel pregnant at all I feel energized.maybe I'm use to morning sickness. I feel that I'm no longer pregnant and wondering if my baby is still in there I still have no baby bump and I feel comfortable laying on my stomach. Could there be a such thing as silent miscarriage or should I not worry at all?