The answer to this perpetual request is ad follows:
1. Go to ANY Walk-in or Urgent Care or even some quickie Doc Office beside or in a pharmacy.
2. Be straightforward and tell the Doc you are in a difficult, sexless marriage and strayed into a more intimate, spontaneous affair. IF you have symptoms, tell the Doc. If you areworried about a specific risk like HPV as your previous GF had been diagnosed durang a PAP smear, tell them. And tell them you want to get a "full panel" of STD screening tests.
Don't be shy or afraid of them telling your wife etc. Go to a completely different walk-in clinic than yours and just ask. A Nurse Prafctioner can even request the tests and prescribe medication.
Now hurry up and go get tested before they have to amputate it, or worse.... just let him fall off... all by himself!