What are some foods that I can eat to follow a low-carb philosophy? I would like to lose 20 lbs by my wedding

I am getting married July 4th and need to shed some lbs. The hand-held body fat% tester at my gym said I was borderline obese or high risk. I am 6'1", 220 lbs with an athletic/strong build but have some spare tire action going on that I want gone asap.