Well I am waaaay later than all of you!!!
This is my first and I have an anterior placenta. I felt flutters from about 18 weeks but didn't feel really clear obvious pokes or jabs until 24 weeks! I was at the Dr last week before it was obvious and she said it was normal to be this late with an anterior placenta and not to worry, it would come soon, and sure enough a couple days later I could feel the jabs more clearly. And last night at 24+4 I could finally see the movement from the outside!