My #1 is 3.56kg w/ very big head. I only open 4 cm. my birth canal is long n narrow also. Hip bone never expand at all.
The last check plecenta still low think not hope for natural birth . Unless it when up last min. Also have to consider I preg again only after 6 month break from csection.
Btw for g diabetic. I had it during 1st preg. This #2 I dont have. As long as control diet n do the blood test. dont worry so much.