As others said you won't feel consistent movement just yet. Baby has so much room right now that it's easy for them to "hide" and kick at your back. I definitely understand your fear though!
nope, it's normal. The regular kicks can sometimes not even start til closer to 30w. that's what happened w/my first son. This time I felt regular movement at around 24w
I've been through the same thing. I am about 18 weeks and really don't feel the baby move much right now. My OB says everything is fine, so I guess I have to trust her on that, though I know how scary it can be. Try to relax as I am sure everything is fine with your little one.
i wouldn't be too concerned i was feeling flutters and little kicks from about that time here and there until about 25 weeks when i could feel her move everyday. The baby could have changed positions and be facing the back.