I have gotten some bumps during my sleep that are quite large, but mostly unnoticeable and disappears within a few hours.

Is this acne? It's definitely not a pustule, or papule, or a whitehead/blackhead. It might be severe, except that it lasts like forty-five minutes and then just disappears from the face of ... my face.

Note: they seem to appear during or before I sleep, near my eyes, and when my acne is somewhat worse.