Hi Ann,
Kumusta and congratulations!
The embassy will only accept SECPA. So make sure you applied for it through NSO to be expedited. 2 weeks if your civil registrar still has it where your marriage was reported. If not have to wait 12 weeks and still have to apply through NSO and pay for postal check etc.
As for passport, you may use your maiden name. Takes 50 business days now with DFA for renewal, new passports or change of name. You can always have it amended here in the UK by post.
