Feeling extremely nauseous today! Labour sign??

I'm 36+ 3 days today and for the past week iv been having a lot of braxton hicks! Today I suddenly feel extremely nauseous! I haven't felt nauseous for months now! Iv read feeling really nauseous can be a sign of impending labour? Is that true???

EDIT- I also feel abit more crampy today and feel abit of pressure in my bum