in this place of the stomach

Can you explain this, please?

Probably where the orbicularis occuli muscle overlaps the bone ridge and also the frontalis insertion point is located. Nerves exist where the muscles are, sensations come from nerves.

If the senation has changed over time its possible you accidentally hit yourself, maybe while alseep, or walked into something.

My extensive 3 months of medical experience says it’s either, an ingrown hair, pimple, inflamed sinuses, lupus, cancer, or a broken finger.

Maybe you broke your face

Ingrown hair?

Inflamed sinuses?

Pimple

Maybe you are holding tension there. You could try body scan mindfulness targeting that area or gentle massage to see if those start to make a difference.