I'm a little worried.....

Megan
I am 15 weeks and 1 day.  I am a thick chick and still have some "belly" that I never lost from my first pregnancy.  I have not felt this baby move yet. 😔. I am worried since we had a miscarriage two months before this rainbow was conceived.  
I have an appointment next week on Monday for a 3D ultra sound to find out the sex of the baby.  I keep having dreams of going in and the baby not having a heart beat.  This pregnancy is almost horrible in the aspect of "what ifs" 
Did most of you ladies feel your baby moving by 15 weeks? 
I know at 12 weeks it was doing fine.  We heard the heart beat and heard the lil one moving around.  I think I'm just terrified. 😢