I have gained 20 pounds in a month I had a thyriod test done its fine please help me.?

Need evaluation. The thyroid test is one of a few tests that need to be ran. But the test is only the beginning, speaking to a bariatrician ( a physician specializing in weight loss and metabolism) is helpful - the results of a typical thyroid panel may be interpreted differently and further evaluation of other hormone and metabolism markers can help with deciding best way to lose the extra pounds.
Weight Gain. There are many possible causes of sudden weight gain, and thyroid conditions are only a small percentage of these causes. Discuss this with your doctor in detail to find the true cause of your sudden weight gain, and then obtain appropriate treatment.