I need to lose 25 lbs fast. Does the South Beach & Protien diets work?

I want to lose 25 lbs in about 4-5 weeks. I know it’s fast and not healthy blah, blah, blah but I just can’t take it any more. My clothes don’t fit. I have nothing to wear. I gained it when I got pregnant and I had some complications that caused me to gain. I just want it gone and fast. It is affecting my self esteem and how I feel about myself which is affecting my marriage. Once I get it off it will stay off. I am very healthy and I eat very healthy. My colesteral is only 126 and I exercise. I just need a quick fix to get it off once and for all. Help.