About 2 years ago I had a chancre sore come up on my penis shaft near the bottom. At the time I wrote it off as being an infected hair or something. But now Im starting to notice a decline in my mental quickness, some brain fog, and some memory problems, as well as tracers in my vision. I did have a rash on the soles of my feet and between my fingers which my doctor wrote off as being a fungal infection(athletes foot). Could a doctor simply give me an shot of penicillin without a diagnosis? I am fairly young, with a child, and dont want to ruin my chances at being able to get life insurance at an affordable rate so I really dont want such a diagnosis to show on my medical records. Im really just freaking out and don't know where to go from here. Plus I live in a small town and really dont want the word spread about said diagnosis.