I‘m having a lot of trouble now because I lost my passport last week.

If I didn‘t lose my passport last week, I wouldn‘t be having so much trouble now.

If I hadn‘t lost my passport last week, I wouldn‘t have had so much trouble now.

If I didn‘t lose my passport last week, I wouldn‘t have had so much trouble now.

If I hadn‘t lost my passport last week, I wouldn‘t be having so much trouble now.