Fizzing/vibration/buzzing @ 16w? Baby movements?

Baby is that you!? I am a FTM and 16w today. Yesterday when I got home from work I was standing at my dresser and I felt a 10-15 second series of a light, slight buzzing/fizzing sensation. I called my OB this morning just for some input and the nurse said it's early but I could be feeling my first baby movements. What do you guys think!?