On a side note, Gono is a nastly infection to have and there would be no doubt you have it as the symptoms described would be very evident.
Hi, symptoms of stds like gono would be a white puss penis discharge and burning while urinating, chlamydia would be itching inside your urethra and a mild gray discharge, both would appear about a week later.
With out these its almost certainly that you dont have either which is also confirmed with your negative tests.
the we hour tip symptoms is almost surely from the rough sex as no std nor fungal would appear that soon.
The swelling is also not an std symptom but also maybe from the act itself or from your constant checking and pulling look for things.
Have a follow up with the doc but keep in mind anxiety can create all kinds of symptoms.
I might add I'm not having discharge or have any sores. Just what appears to be swelling and discomfort.