My bub is 25 weeks and I have been feeling movement from very early on but there are very quiet days and I cant help but give my tummy a poke ha ha..move! Bub usually abliges with a little kick or poke back. Simone the other things that I find makes movement feel really prominant is lying on my back on the couch or bed or if I am sitting at a desk and leaning forward..probable feelin squahed and complaining!
I know what you mean though, I always worry when I dont feel anything for a while