As always, thanks for all your help and information.
Probably not herpes then.
BTW, let me mention that the new red pimple and raw spots have not changed in color of or consistency over the past 3 days (i.e. has not become a fluid filled blister).
Your previous thread ended with consensus that herpes seemed unlikely but could not be definitively ruled out. That remains the case. Your description of both the earlier symptoms and the new "red pimple" are typical for herpes, but herpes can be quite variable in appearnce. Friction doesn't trigger herpes outbreaks, but if an outbreak was on the verge, masturbation could irritate it and make the lesion more prominent than it would be otherwise. If the spot is herpes, over the next day or two it probably will develop a blister-like appearance, with clear fluid inside. If that doesn't happen, herpes remains unlikely. Another atypical aspect is the early recurrence, only 2 weeks after the initial event.
Your partner's belief she doesn't have herpes is useful information and argues against that diagnosis. However, routine STD testing usually doesn't include HSV blood tests, so she might not know for sure. But if she had a blood test that was negative for both HSV-1 and -2, you will know for sure your problem can't be herpes.
All things considered, I continue to doubt you have herpes. But diagnostic lab tests are the only way to know. If the new bump develops into a blister or pimple-like lesion, return to your provider's office ASAP (within a day, while the lesion is fresh) for reexamination and possibly a viral culture or PCR test. If that doesn't happen, or if things remain uncertain, sit tight and have another blood test in a few weeks, preferably 3 months after the sexual exposure, to see if you have developed HSV-2 antibodies or the HSV-1 ELISA ratio has risen.
Regards-- HHH, MD