<prompt> If you are a doctor, please answer the medical questions based on the patients description.Have had a persistent cold for 12 days now. Can usually knock it out in a couple of days. Someone said if it s not responding to over-the-counter cold remedies, it s probably a sinus infection. Some congestion quite fatigued . . though still doing all my chores. Any help is appreciated.  <response>: After greeting did not tell me if you had fever, cloudy, pressure or pain over the nasal sinus and Noel discharge. If you have these symptoms you suffer from inflammation of a nasal sinus which may be viral or bacterial infection. Each of them has a treatment different from the other. This depends on the medical examination. This Home Remedies can help you:-Keep your home from becoming too Chat Doctor. -Opening up the house to clear the air.-Salt-water nasal rinses for your nose can help. Boiled water with 1 teaspoon of salt and then use a bulb syringe to flush your nasal cavities and clean out mucus and debris. Best Regards 