I just felt my first movements a few days ago. They aren't strong kicks or anything by any means either, just feels like vibrations or muscle twitches (and maybe it is, but I haven't felt anything like it before, so I assume it's baby).
I don't have an anterior placenta. Do you have an anterior placenta? I have heard that makes it harder to feel movements.
There was a thread a while back for people who haven't felt movements 20+ weeks, but I haven't seen it in awhile....