Hey Giselle, I don't think you can lose so much weight in such a short time, its not healthy and you'll just gain it back easily. We're almost the same height and weight, I'm 190lbs, 5"4. I think you can at least lose 20 - 25lbs if you work extremely hard. That's what I'm wanting to do because my aunt is getting married the first week of Jan. and I'm a bridesmaid. Anyway if you need a weight loss buddy email me at poorlilangel@juno.com. Good luck and God's speed. -Veronica