Disclaimer:  I'm soooo not a doctor.  Like wow, not a doctor. 
 
 
That said, it's possible to have an ear infection and a cold. 
 
It would be the awful situation of both a viral and bacterial infection. 
 
Based solely on what was posted and my incredible lack of medical knowledge it sounds to me that you likely have/had both infections simultaneously.  
 
That said, I would continue to take the prescription and going to see your doctor or walk-in clinic would be a good idea where your ear is still bothering you. 
 
Are the symptoms the same or is it sore in a similar but different way?
		 
		
		
		
		
		
		
			
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