Hi
It’s hard to say what it could be without having a look at it.
Given that you get a small amount of stinging pain now and then and have this small lump under the head of your penis I would recommend going in to see a health professional for some STI testing and an exam.
It’s very common for us to see people in the clinic when they are concerned about lumps they have on their genitals. Sometimes they can be caused by STI like genital warts or they can just be normal things like glands or skin tags. We can usually tell by just looking at it.
Have a look at our clinic finder if you need to find a clinic in your area.
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Health Nurse
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