Headfairy, my first pregnancy didn't give me a bump till I was about 5 or 6 months gone. I didn't get any limbs sticking out, bump was very tidy and tight = baby loved being swaddled when born (my own conclusion).
Second pregnancy, bump appeared a tad bit earlier, then got limbs sticking out towards the end, didn't look so neat. I could tell how the baby was lying, but only by poking it . Baby didn't really take to swaddling once born, which I thought was because she had more room to move in there, less restricted.
Third pregnancy: bump appeared at about 10-12 weeks!! Felt first kicks at 15 weeks, have had bits sticking out early on (about 23-24 weeks?). Can feel every hickup, bump hangs down a bit (dp says it doesn't, it feels like it), and isn't so neat, which I attribute to lack of holding muscles.
We'll see if my home-made theory about swaddling is confirmed, this one should hate it with a passion!
I am sure every person is different and feels things differently..If your DS was breech, I wouldn't be surprised if this one wasn't breech too, as it has to do with the shape of your pelvis. The bubs settle in the position that is the most comfortable for them, with the biggest space kept for the head.
God what an essay!! Sorry!