the bump seems to be going away so i'm guessing he just hit his little head and it's just a goose egg. it really doesn't seem to bother him. he's not any more tired then normal (of course the past week, before the lump appeared, he was sleeping a lot anyways...i think he's hitting a growing spurt again), eating and drinking normally, playing, laughing and everything.
i'm still gonna attempt to get his pedi at least on the phone tomorrow to see what she says.
i wish i could help, but I don't know. I wouldn't worry too much, just make an appt on Monday and have it checked out.