I am 5'6 and 192 lbs-am i overweight?

You are OBESE: Your Body Mass Index (BMI) is 31.0 Kg/m2. This means your weight is within the Obese range. Your current BMI is greater than the recommended range of 18.5 to 24.9. To be within the right range for your height, your ideal weight should be between 115 lbs and 154 lbs. Being overweight increases your risk of developing coronary heart disease, as well as other health conditions such as diabetes.

Yes, by BMI.: Granted, the BMI is a flawed governmental indicator that does not take body composition into account, but at your height and weight, your BMI of 31 would put you into the "obese" category. You should make some efforts to lose weight, as obesity does put you at risk for weight-related health concerns.