Little Nugget Kicking

So it's my first baby, I am currently 21 weeks and have been waiting so patiently to start feeling the baby. Goes my 20 week appointment--they did a doppler and said there's so much movement going on and asked if I felt it--unfortunately I couldn't. Well, since yesterday, I feel this weird thing where it's like someone is farting inside my belly but at the same time it feels like little quiver/flutter. That's my baby right? :)