Beginner Gardening: Hardy fig, brown spot on the stem, 1 by CuriousGard

CuriousGard wrote:
Hello,

I am new at this, bought a small hardy fig plant and replanted it into a pot. At night I keep it inside, since it can get cold then I put it outside when sun comes out. It\'s been 6 days since I replanted it and now I\'ve noticed a brown spot developing on the stem. And one of the small leaves fell down. Any idea what could cause this? I watered it when I planted it and once more 4 days later.