Hi there! It's completely normal to not feel any kicks at 19w, some women feel it as early as 16w (like me), and others as late as 25w. So don't worry about it too much! I hope this will ease your mind until your upcoming scan :)
Yes, it is also normal for your BPM/heart rate to increase as your body is pumping more blood to your body and baby. Just remember to take deep breaths and take things slowly.
I hope this reassures you! Good luck, mama!
ami