You can lose weight and inches from exercise! You need to stick with your routine and keep yourself motivated. Depending on how long you have been exercising might be part of the reason. Are you new to your current program? Or have you been completing the same program for months without change? If either of those questions are a yes then you need to just stick with it or you need to re-vamp your program.
Also consider nutrition. Do not expect to lose weight just through exercise. You must be sure to have a healthy nutritional lifestyle in order to be successful in losing weight and/or inches. If you want further assistance, please feel free to contact me and I will be glad to assist!