Think i'm finally feeling my little one!

I'm just now 16 weeks and a FTM but I keep feeling these little thumps and I can't help but think its my tiny unborn! Its only started in the last week and, so far, I only feel it when i am lying in bed about to go to sleep. Could it be?! :D 
What was your experience feeling tiny baby movements in the beginning? How far were you?