Flying at 28 weeks

Sharon • Hi!! This is our first pregnancy and we are SO excited!!! My husband and I are expecting our little one Feb 2016!!!
So I'm flying from Texas to Colorado for Thanksgiving next week and am starting to feel a little nervous. My doctor said I am fine to fly, I've had no complications, but lately I've had a few people tell me they flew, or they have a friend that flew around 28 weeks with no prior issues and ended up going into labor. Does anyone know how common that actually is? Or have any stories about flying that will make me feel okay about it? Also, I haven't had any swelling, but I know you can swell from being on a plane. Are compression socks important to wear? Thanks!