All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
First of all, we thank and praise Allaah Who guided you to Islam and we ask Him to make you firm and steadfast on His Religion until the Day you meet Him.
We advise you to seek beneficial knowledge, perform good deeds and befriend righteous and pious women, as these are the best things that help a Muslim woman remain steadfast on her religion.
As regards migration, its ruling differs according to the circumstances of people and we have already clarified this in Fatwa 84352. Therefore, if you are safe from being tempted in your religion and you are able to establish the rites of your religion, then you are not obliged to migrate. Rather, it might be that staying in your country is better as you might not find a Muslim country where to migrate and where you would feel safe because you have no husband or Mahram to accompany you. Therefore, we advise you to try to convince your fiancé to hasten to conclude the marriage with you, as this will help both of you, Allaah willing, to protect yourselves from the reasons of temptation. For more benefit, please refer to Fatwa 86405.
With regard to the work of a woman, she is religiously permitted to work provided that she abides by some pre-conditions, like wearing Hijab when going out of her home, and not mixing with men and other pre-conditions that we mentioned in Fataawa 83607 and 82399.
As regards what is a Muslim country, then the jurists defined it as a country where the Islamic rulings are applied and where the Muslims are in power.
For more benefit, please refer to Fataawa 86528 and 82392.
Allaah Knows best.