Noticed bumps after shaving

I noticed some bumps on my pubic area and shaft of my penis after shaving a couple of weeks ago. They have all seemed to appear after I shaved; I'm very prone to acne all over my body. I feel like I had similar bumps years ago which occured the same way, after shaving. I was considering getting tested to be on the safe side, but should I be considered about any of these? The one of my penis kind of looks like a big black head?

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By ‘getting tested’ do you think there is a possibility you have taken risks recently?
The one on your penis I would apply some liquid anti-septic (TCP) on that, dab on 2 or 3 times a day and should be cleared in 3 or 4 days.
The marks on your lower-abdomen / upper pubic-area do look like razor rash. I do shave part of my pubic hair regularly, I found the best way to avoid razor burn / rash is to use a general cheapie razor that you have used on your face - when you start to feel that it not quite so sharp anymore, keep it for shaving your pubic area only. Then use an after shave cooling balm, such as one of the Nivea for men range …