Do I need to see a doctor because of the whistling sound and likely sinusitis, or can it go away on its own and what should I do?

It is recommended to consult a doctor if you have persistent symptoms of sinusitis, such as wheezing. While some symptoms can improve on their own, it is important to seek medical advice if they persist for more than 7 days without improvement. In the meantime, you can try using nasal hygiene practices, avoiding combination of certain medications, taking over-the-counter pain relievers if needed, using throat lozenges for throat irritation, and staying hydrated with hot or cold fluids.