How to draw out a microscopic splinter!

I need help.
I’m going insane.
I have a splinter that I can’t see in my toe, I can feel it when I walk but otherwise it doesn’t exist.
I’ve had this weird sharp pain for a week, I’m assuming it’s a splinter as it hurts in a very particular area.
I have tried : the potato, hydrogen peroxide, a needle, hot water and baking soda – I think I’ve tried everything.
How do I get this out, there is a tiny tiny black dot where I’ve dug into my foot, just under my big toe so I’m guessing it’s there.
I can’t see anything really.
It’s driving me insane.
Thanks.