My baby is 8 weeks old and had an ear infection in the 5th week which was treated with antibiotics. The fluid discharge subsided after a 7 day antibiotics course. The following week, I found a yellow discharge when I was cleaning his ear with a cotton cloth after a bath. I thought it might be the residue fluid which I saw. Today again I see it in the other ear. However both the times there was no discharge flowing out of the ear. I only saw it sticking to the cloth. Is it an infection again?