Draco's alleged dark mark

[mandrina_q]

No: HPFGUIDX 162506

Hello all,
  I have been dealing with this itchy theory- farm in the back of my 
head and I would like your opinions on this. I have searched the old 
messages for a few hours looking for theories on this and have not 
found them.  if they're there, I'd appreciate the link... otherwise 
please chime in.

In HBP Ch. 24, we all know how badly Draco is injured.  We also know 
that Snape (perhaps spying on Narcissa's behest) is there- like magic-
 to heal him.  However, we also know that Draco gets taken to the 
hospital wing to be further cared for by Madam Pomfrey (I take this 
to be like post-op care... he's all sewn up, but it was still trauma 
to his body and then there's the 'might scar' scenario).

If Draco has the dark mark on his left arm as Harry suspects...

would Madam Pomfrey not have seen it when ministering to his wounds?  
He would have had to have had his shirt and undershirt removed for 
her to properly examine all of the places where Harry slashed him 
open.  That would certainly have exposed his left arm.  And even if 
Snape had healed the wounds enough that she didn't need to remove his 
shirts, would she not insist on changing his bloody clothing?

would Snape have though of that and found a way to mask the dark mark 
before taking Draco to Madam Pomfrey?  

Or does Draco not have the mark yet?  I wonder if Voldemort's order 
is like other magical orders of lore, and if Draco has not yet been 
through the proper initiation to earn the Dark Mark. This is a big 
bone of contention in my house at the moment.  

Please offer up your own theories. :)

Thanks

-MQ