Sexually Transmitted Diseases Community

Hi all,
I have been reading off and on here for a few years. But this will be my first post. I will attempt to keep it as short as possible, and to the point.

I am a 24 year old, white male. And approximately 10 days ago, I noticed in the shower a small pimple/zit on the upper-right part of my scrotum. Did not think much of it. And about 5 days ago, I noticed another similar pimple/zit on the lower part of my penis near the base. To give you a picture, these two areas where these pimples/zits are would rub right against each other when I am not erect so during every day activity where I am sitting, standing, etc. They looked like a standard zit, red not really coming to a head though. Around the time the initial zit/pimple surfaced, I started having moderate lower back pain. Was not too worried as I work in a very physically demanding profession every night.
As of last night, the pimple/zit on the scrotum started to turn into more of a rash and getting more spread out on my scrotum. When they were just initial single zits/pimples, they did not hurt, or itch. The pimple/zit on my penis looked like it was developing a small head with some white on the end. That has went away, and tonight it is starting to slightly spread on my penis into more of a rash. It feels wet or slick as if there is pus all over the area where the rash/pimple/zits are. The back pain is still moderate to some serious pain at times. I have been able to work out through it doing cardio, that helps loosen the back up. But I still have the pain.
As of tonight, the genital rash/pimple/zits are slightly itchy with minor pain if I touch them. I have some slight groin pain also, which I am not sure if it is related or due to me hitting the gym.
I have done nothing but read and research possibilities, and I am just sickened at what the research is leading me to what it most likely is: HSV or HPV.
Background on my sexual history. I have only had heterosexual sex with white females. I have had multiple sexual partners over the last 12 months. I have never, and I mean never had sex without using a condom for vaginal sex. I have received unprotected oral sex from multiple partners. I am very health conscious and always try to be as safe as possible, using condoms for vaginal sex. I have never given anal sex, or anything like that.
This has been a rough week or so, and especially this weekend. I am not the same person, I cannot stop thinking about that this could be HSV or HPV. It has changing me as a person already, and I am hoping and praying it is something else that is not permanent. The doctor could not see me Friday, and obviously he was not available this weekend. So I am trying to get in to see him tomorrow.
I just cannot believe this is a possibility, or happening as I always have used protection and been as safe as possible. Anyone that can give me some insight on personal dealings, or professional knowledge/opinion of what this possibly is, and where I should go from here would be greatly appreciated. I am a strong masculine male, but I can't describe in words how this has me feeling. It could affect me the rest of my life. But I am thinking the worst of course, as is probably natural with something like this. Please help me here, and I would appreciate insight, thoughts, and professional opinions.

Thank you, and apologies for the length of this post.