I felt Shortstack kicking/moving at about 15 weeks.
I could feel the kicks on the outside at 18 weeks.
DH felt the odd kick at 20 weeks but not all of them & only if he pressed hard.
Now just a week and a half later he can feel every kick & movement. It's amazing the difference just one week makes.
This morning Shortstack was going wild in there but when DH put his hand on me of course bubs stopped!! He also kicks the cats when they sit on my belly but they either don't notice or don't care.
I've only seen movement once - at 18 weeks he pushed his head or bum right up & I could see a lump on my left hand side!!