I shouldn't be so emphatic but no, it looks like pimple meets mole. You look like very freckled though and an examination would be a great idea every now and then. Note you are you are going to need some help to see the fun bits, even a low rent dermatologist can handle this as well as get a biopsy off to the lab.

Seems pretty tough, you need to be able to reach the skin, cut yourself without fucking up maybe novocaine to do it right, keep the sample sterile and cool now get it to the lab. I'm not sure they will even accept it you should start by asking them if you are serious.

Or you could just use one of these

Great but these aren't on the market yet are they

This is the kind of device that will get repressed by the medical authorities, its an existential threat to them.

I'm guessing blood blister underneath the more, I can see another one nearby.

How long has it been like that?
Was it getting irritated by what you wear?
What part of your chest is it?
How is your hygiene?

Have a close look at this mole, does it have a hair growing out of it, even if it is a tiny tiny one?

Moles with hair do not turn into malignant tumours such as cancer.

Nevertheless, I'd suggest to show it to an oncologist.

I've had the mole forever but it just got funny in the last few days, it's coming a bit down since the post though. It's right in the middle of my sternum on both axes. My hygeine is good but I should note my laptop battery sits right over the area for hours a day.

No hair, that's a really good one though I didn't know that.

Thanks a lot, I can't afford an oncologist so this is all especially appreciated.