Too soon for movement?

[Dobsd]

So, for the last week or so I've been feeling little 'flutters' that last a fleeting second or so.
On Saturday, I felt what felt like stroking on the inside but again only for a second or so.
Last night was the clincher... For around ten seconds I could feel something. It was so strange! Then again tonight I keep feeling the same thing.
I'm 15 weeks 4 days today. Is it too soon to feel baby moving? Or is it just gas?! Haha....
I don't know if it makes a difference, but I'm naturally quite slim so I was thinking maybe that makes it possible to feel movement early?

 

[Spiffynoodles]

Sounds like baby to me! I felt my first at 16 weeks, so it's not unheard of.