Thanks for writing in.
Considering your history, it looks like that nasal discharge could be CSF i.e cerebro spinal fluid which is dangerous condition.
As it is very risky, I would like to rule it out first by doing CT Scan
, consult ENT specialist
as soon as possible.
Other less severe condition is sinusitis
or viral cold
but you do not have symptoms of nasal blockade or stuffiness I consider; as it is not mentioned above.
So consult ENT Specialist to rule out CSF leak.
I hope I have answered your query. Feel free to revert back for further clarification.