It's better if you just wait these 2 days rather than pay the interest on it.
^
I charge 0.33% interest per day, however I prefer to have collateral to backup any loans I give out.
If you want to borrow 0.05~ BTC, you'll have to pay back an extra 0.000165~ BTC per day.
So at the end of the 2 day period you'll have to pay 0.05033 BTC total.
I charge an extra 5% per day late (+ 0.33%/day).