Hi. Thanks for your query. Read and understood that you had nasal discharge with bright yellow fluid from the nose. This implies that these was no Frank blood. The most probable reasons could be: Actual clot remained inside and the seroma got drained out. This occurs in the cases of cancer of sinuses. Another possibility is that this is cerebrospinal fluid. You need the following investigations: CT scan of PNS and nose. MRI of the base of skull to see for CSF leakage. Routine tests of blood and urine and coagulogram. The treatment depends upon the findings of ENT endoscopy, and repots, go ahead with under the experts.