Yeah, I'm another who doesn't think having oral sex immediately post-op is wise... the human mouth is *filthy,* and the last thing you want is bacteria introduced into a still-healing wound.
As for explaining the scars, you don't have to have had your labia reduced down to tiny to have had labiaplasty; I've seen photos of women whose inner labia were so long they dangled down their inner thighs and got in the way of underpants, and who had reductions to "still big but doesn't get in the way of normal life anymore."
Besides that, I'm sorry, but I don't know where your surgeon places the scars; mine are on the outer labia, where pubic hair hides them nicely. The explanation of what they are depends on placement, really.