Attack of the Killer ?

so we're thinking this bite was either from a spider or an earwig during the nite. poor bentley...after about an hour of being up saturday morning, i noticed this HUGE swollen area on his head. it was very hot so we gave him benadryl, ice, ect. today the swelling has gone down a little bit but has spread out more evenly through his entire face and eye. none of this seems to bother him; he has as much energy as ever! he loves nursery so much that we let him go like a little alien to church. i guess we'll be headed to the dr. tomorrow if the swelling gets worse!