I'll try to be as descriptive as possible, while making this short and to the point. A few weeks ago, I received unprotected oral sex for approximately 10 minutes or so. I didn't finish.
Since then, I've had a pimple-like thing form under the head of my penis. It looks exactly like a pimple (and I've had a few pimples in the same spot before over the last X amount of years), whitehead and all. It isn't painful until pressure is applied to it. It feels mostly firm to the touch.
I have no other symptoms, otherwise -- I feel totally fine. I'm concerned it's herpes from the oral sex, however I'm not 100% certain. It's only been present for a few days now. It has the usual characteristics of a pimple, such as a small amount of pus will come out when squeezed.
That said, I'm an overweight guy and I recently started working out, relatively intensely. So, this is either an awful coincidence, or I contracted herpes from the oral sex.
Any help would be appreciated.