Take a home pregnancy test before you go to your appointment! Like... today! Just to ease your mind. They're cheap and easy to use.
Exactly how late are you, and did you use protection when you had sex?
If my memory serves me correctly, you have to be QUITE far along to actually have a baby kick inside. By that point you'd have a whole ton of other symptoms going on.
If I saw my stomach "move," I certainly wouldn't jump to the conclusion that I was pregnant, and I wonder why you did? Have you been thinking about pregnancy a lot lately?