Thanks for your question on Healthcare Magic.
I can understand your concern.
You are afraid about aspiration of foreign body (sunflower seed) in the lungs.
If this would have happened, you must be having continuous
cough,
chest pain, breathing difficulty etc.
Since all these symptoms are absent, I don't think you have aspirated sunflower seed.
So no need to rush to the hospital. You can wait for 1-2 days.
If during this period you develop constant chest pain, continuous coughing and breathlessness then immediately
consult pulmonologist and get done
bronchoscopy.
Bronchoscopy is not only diagnostic but therapeutic also. If there is seed then through bronchoscope it cannot be removed.
So at present, no need to worry much. Just relax and calm.
If worsening symptoms are there then consult pulmonologist.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.