Your symptoms suggest a common cold or environmental allergies. For the sneezing, an over-the-counter antihistamine like cetirizine or loratadine can provide relief. For the cough, a cough suppressant like dextromethorphan is helpful if it is dry, while an expectorant like guaifenesin can help if you are coughing up mucus. Staying well-hydrated and using saline nasal sprays will also help soothe your airways. These symptoms are very common and typically improve with rest. However, if you experience shortness of breath, high fever, or if symptoms do not improve after a week, please consult a doctor for a physical examination.