Thank you for sharing your story, Basma!
So your chunk was to not feel safe and accepted in that country where he worked. And you told him about it but you stayed a long time, which was adding to the weight of the conflict. And your symptoms eventually helped you to move back to home. There they weren't needed anymore and went away. That's phantastic! 
Is there a learning you have won by that experience, that helps you in your further life?