no, I have budgies/parakeets and have never seen that, and from what I've seen it's not possible.
Parakeets have a beak and the thing above it which is called the cere.
a cere
Right above its beak.
Take them to the vet. Feel better!
Parakeets do not have teeth, they have a beak and a tongue.
If a parakeet's beak is blue, it's a boy. If it's red/pinkish, It's a girl!
Parakeets do not become pregnant, they lay eggs. Females have a pink or tan color nostril band.
NO they definitely can not. There beaks are way to small and fragile. The beak would break on contact.
A little further back from where the beak hinges. It is just a hole on each side of the head
Parakeets breath through their cere, The small but cute set of openings located above their beak.
If the band at the top of the beaks are the same then chances are good they are the same.
I don't completely understand but if you mean the thing above the beak is turning pink it means it's a girl.