Praying for Baby M to be well and healthy and am glad everything went smoothly after that.
My son had it quite often beginning of this year but he is 7 years old already. And my sister who is a pediatric doctor wasn't concerned at all. Just said it is usual for some. Like thinning of something something in the nose. Like some people have unusual thinner something (which I forgot).
So I guess nothing to be worry about, speaking from pediatric doctor point of view. :)