6 week old back

Hi guys!
My baby is 6 weeks old and I'm worrying about his back.
I don't know what's normal and what's not
My health visitor told me ages ago that a baby's spine doesn't straighten completely until they are mobile.
Basically when I burp him his lower back is really curved
When he's laying against my stomach his lower back feels like the spine is curved out wards and not straight . When he stretches it feels straighter but I'm just worried now

<blockquote><b>Quoting Nervousmummytobe:</b>" Hi guys! My baby is 6 weeks old and I'm worrying about his back. I don't know what's normal and what's ... [snip!] ... back feels like the spine is curved out wards and not straight . When he stretches it feels straighter but I'm just worried now"</blockquote>




He is fine! They are used to vein in that position and won't straighten out for a bit. You will notice it when he does. Also laying on the floor will help too then he will start kicking and playing.

Thank you so much! So his lower back seeming curved is normal at 6 weeks ?