Dear Raja,
Please go through this site regarding airline rules for Pregnant women.

http://support.qatarairways.com/entries/233023-can-i-travel-on-a-qatar-a...

If you are planning for a delivery in Doha, you will have to get your wife Resident Permit under your sponsorship.
As soon as she comes here, you better get the RP Organized for your wife. after that approach any one of the Hamad hospital to get the Medical card for your wife. Rest everything should be taken care by the hospital.