I'm sorry to hear that your cough has persisted for 10 days and is severe enough to cause vomiting, especially at night. Since you have already taken cetirizine (an antihistamine used for allergies) and levofloxacin (an antibiotic) for six days without improvement, this suggests that your cough may not be responding to the current treatment.

Persistent cough with vomiting can be distressing and may indicate an underlying condition that needs further evaluation. Possible causes include infections not covered by the antibiotic, asthma, postnasal drip, gastroesophageal reflux disease (GERD), or other respiratory issues.

What you should do:

• It is important to see a pulmonologist (lung specialist) or your primary care doctor promptly for a thorough examination.
• They may recommend further tests such as chest X-rays, sputum analysis, or lung function tests to identify the cause.
• Avoid self-medicating further without medical advice.
• If you experience difficulty breathing, high fever, chest pain, or worsening symptoms, seek emergency care immediately.

Please consult a doctor soon to get an accurate diagnosis and appropriate treatment tailored to your condition.To narrow down potential causes, we will need some more information.I understand you've been coughing for 10 days and even vomited at night. Please tell me your age and gender.