I dont have first hand experience in this.. but my sister went thru the same thing and it was no problem at all.. especially that on the passport it says your maiden name and then on a second line it says married to or wife of and ur husbands name.. so definitely no problem.. and as long as u have you rmarriage certificate then ur safe..

If u want to further put ur mind on ease pass by the qatar consulate or embassy in ur country and double check.. you can even do that on the phone no need to pass by..

Goodluck and congratulations