DP got up with our 7.5 month old DS thid morning and apparently DS bumped his head on the spare bed - but DP did not see him do it - so not sure where he bumped it. Noticed when I got up that DS has a small red/bruised lump near his eye - assuming this came from the bump (But DP not sure). Do I need to worry about this- take to doctors etc? DP says 'No' - what do you think?