I've had cramping ever since the beginning, due to my uterus & ligaments stretching. During week 16, I had another type of feeling though. I wasn't sure if it was the baby or not. I thought it might be gas. Thank goodness, it wasn't! The feelings got a little stronger by the end of the week, and I realized, I'm feeling the baby move around!
It's a great feeling!
Yesterday, I did a little test. I had some soda with caffeine in it to see if it would make a difference. Boy! Did it ever! The little bean was bopping all around. It was pretty funny. Guess it wore him out, because he/she settled down after that.