May be a blood vessel near the surface.
My mom got hers cauterized twice (ouch!!!) to stop this from recurring.
One of the many joys of pregnancy! Quite common. Good news is it should disappear once baby arrives :)
I had that while I was pregnant and trying to sleep was awful. I used saline drops and they really worked. I have a 6 month old baby now and no nasal problems. No sleep either... lol :)
Thanx a lot, your response really help me a lot.