Usually there is no discharge from the penis even when a person is aroused, but before orgasm there may be ejaculation of pre-cum which is what you are referring in your question most likely. It is a mix pf sperms and prostatic fluid which is ejaculated to create a nutritional bed for the ejaculate to follow.
If there are no urinary symptoms, then this slimy discharge from penis can not be implicated to be I response to gonorrhoea infection, But it is always better to rule it out with a urethral swab culture.
Please consult your physician for a swab culture and results.
I hope I have answered your query,
wishing you good health,
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.