Not sure if fat makes a difference, I started out at least 2 stone heavier with this pregnancy and felt movements much much earlier, think it's more to do with how the baby is lying? This DC is back to back so in optimum kicking position, but had a friend at work who didn't even know she was pregnant til 7 months, the baby was moving loads in her scan, but all kicks were into her back so she didn't feel them
Wouldn't start worrying just yet, hope you feel some movements soon
I'm on my first pregnancy and so I can't comment on second pregnancies, but ref the weight question I don't think it has that much to do with it as I'm much heavier than you are (given you said you were 2 or 3 stone heavier than you should be) and I felt movements before 16 weeks. (I'm not trying to brag over when I felt them, just saying I'm heavier and felt early)
Think it's more to do with where baby is and where the placenta is, for me I have a posterior placenta so baby was more at the front, if you have anterior placenta this can 'cushion' the impact and lead to feeling movements later, as far as I can work out.
No, it's not because you're heavier than you'd like to be. It's just because everyone's different. I'll bet you're running around after #1 too, not lying on the couch "waiting" for something to happen!
I felt this one at 13 weeks, more than 2 stone overweight and with an anterior placenta.
I just wanted to second the point that 100years made about the placenta. Similarly I didn't feel my baby kicking until late and even after that it didn't seem to be as often or powerful as other people described (and I had a low BMI when I got pregnant). I asked the midwife and she unhelpfully suggested that maybe I just wasn't very 'sensitive'. (this is an awful thing to say to a first time mother, made me feel guilty somehow). It turned out the placenta was anterior and this really cushioned the kicks. All the scans suggested the baby was very active. I really wish the midwife had told me this when I brought it up as it seems like common knowledge and it would have been so much more reassuring. I am now 37 wks and while I do feel the baby kicking/prodding regularly I'm actually grateful that it's not as strong as some other people describe. I still know she's there and well but it doesn't keep me up at night or get uncomfortable. Good luck and I'm sure you'll feel your baby kicking regularly soon.