Do you ever wake up in the morning and you're like, cut somewhere but you don't know how it happened??

I occasionally wake up and my lip is bleeding and kinda around my teeth like I've bitten it in the night but I don't know how.. ever got that? I guess I could have bitten it but to make it bleed?

This morning I woke up and one of my toes was really hurting, so I looked and I had quite a visible cut on it. >_> This one is even more strange!

I think maybe monsters come in the night.