Any ideas what a bat bite would look like?

I woke this morning with two parallel nicks on my wrist, about 3 to 4 mm long, and about a mm wide. We didn’t see anything last night or this AM, but it makes me a touch nervous. The nicks are exactly symmetrical, and about 4 mm apart. I suppose I could have done it in my sleep. Any thoughts? If I start foaming at the mouth someone put me down please. :).