What does this look like?

Jenna

My little one woke up with this, this morning and I'm not sure if it's a bite or what? He slept in my bed last night... we have no pets and we have a brand new bed and sheets that we bought in February we also live in a brand new development our home is only a year old so there isn't anything old or what not... what does this look like should I be concerned?

It's on his chest kind of where is chin sits lol