Another how much weight can I lose question ....Girls HELP!?

I went shopping for clothes today and It was a complete nightmare .I wanted to cry at the store.I'm 19/F and 5'3 height and weigh 53kgs or 117 pounds.A year ago i weighed 47 kgs or 104 pounds . If I work out and eat right for a month will I lose the weight.I can't live with myself anymore