Baby's First Movements?

Twice so far today... (I am 16 weeks and 2 days) I think I felt the baby move.... "flutters" or whatever you call them.... It felt like swirling (I was in a store the first time) you know when you like take a spoon and swirl water into a tunnel vacuum in a glass... It scared me this morning... It happened again just now laying on the couch, and lasted maybe two minutes... Scared at first; went and grabbed the Doppler FAST... I thought if I am able to find a heartbeat because of the swirling sensation then that might actually be the baby moving. I found that fast beating heart in less then 2 seconds...If so our baby is a swimmer for sure... LOL or Skating in fast circles...DH says baby is doing water acrobats.