i've had these for a while but can't work out what they are
What age are you David? I take it you have not seen a medical professional about this?
If you happen to live in the UK I would be going to the likes of a GUM Clinic to get a visual check done on this, or, go to one of the larger sexual health service providers in the region in which you live - you are likely to need to wait until virus restrictions are lifted, but you could phone any service such as this to get advice on appointments …