We did call Malaysia airline and their English was extremely poor. I have also emailed them twice and they only state the following:
'For your information, expecting mother may be accepted for travel on MAS services up to :
* 35th week into pregnancy (international flight) and
* 36th week into pregnancy (domestic flight)
provided the passenger need to produce a medical certificate signed by your doctor stating
* the expected date of confinement (EDC)
* normal pregnancy
* passenger is in good health to travel
Kindly be advised that expecting mothers beyond those stages will NOT be accepted for travel.
For international travel, acceptance of travel must also take into account immigration requirements.
Some countries may refuse admission to foreign national in advanced stage of pregnancy.
Malaysia Airlines also refuses admission for foreign ladies with 6 month or more into pregnancy.
Should you require any further assistance or information, kindly contact us at 1-300-88-3000 toll-free number within Malaysia or +603 7843 3000 outside Malaysia.
We will be glad to assists and serve you better.
Thank you for choosing Malaysia Airlines and we look forward to hear from you again.'
Which is very vague and also states different terms of pregnancy.