Feel/See your baby

my wife said the other day that, she felt the baby.

15 weeks, she doesn't have her baby bump yet, but this particular day the baby came up and sat in the lower part of her stomach. she knew because what was happening never happened before and it was a little hard. said that when she rubbed and touched the baby, it kicked twice, moving out of the spot.

when she got up to do a couple of things and lie back down, baby was gone from the spot. I know she was very happy. have that happen to any of you?