Diana, I would suggest that you get an appointment to see a Registered Dietitian. These are professionals who are knowledgeable about nutrition and weight. They can evaluate your situation and help you with a plan that you can sustain. It may take longer than what you would like to lose, but if you stay with it, it will work better than crash dieting followed by regaining. See if you need a doctor referral, but in any case, spend a little money and get some help, rather than spending it on beer...
Jay