Im 33 weeks pregnant, but have had scan and its showing 39 weeks. whats the chances of me going into labour early. has baby is big thanks. ?

Not related: Notoriously, scans are more inaccurate the later in pregnancy they are obtained. Additionally, the size of the baby does not indicate when you will actually go into labor. This only suggests that the baby may be large for gestational age. Speak to your physician about this. Also, be sure to eat right and stay active.

Ultrasound dating: Third trimester ultrasound can be off by 3 weeks and a pound of weight! if you had an early pregnancy ultrasound, this will be the more accurate predictor. Since this is your 3rd birth, your cervix may thin more quickly and for that reason there's a chance you could deliver slightly earlier.

What did your OB say: U may not obviously if the cervix is long and closed that is a good sign and u need a repeat us in 3-4 weeks for an efw because if the wt is too large u if u were my pt i may depending on what the wt is recommend a csection, as u do not want to end up with shoulder dystocia please discuss a plan for you with your OB this coming week!