Your symptoms point to a viral common cold, which typically takes 3 to 7 days to resolve. Please stop taking Nodimox Plus immediately; it is an antibiotic and completely ineffective against viral infections. Misusing antibiotics can lead to drug resistance. New Sumo Cold helps relieve symptoms like sneezing and throat pain, but it requires time to work. Instead of switching medications, focus on supportive care: practice steam inhalation twice daily, do warm salt-water gargles, and drink plenty of warm fluids. If your symptoms worsen, or if you develop a high fever, please consult a healthcare professional in person for a proper evaluation.