Earlier I was holding my infant niece to where she was sitting up on my tummy, and I felt my son (i'm 26 weeks along) just start kicking away. I lifted my niece up off my tummy, he'd stop kicking. I'd set her back down and he'd start kicking again. I wonder if he senses another baby on my tummy and is jealous? Lol it was pretty exciting to feel him kick so hard though, it was also the hubby's first time being able to feel him kick :)