Mom Guilt.

This morning my 3 yo said to me, "Mom, why are you always sleeping a lot all the time?!"  Every morning I've been waking up at 3-5 am, then getting my hubby out the door at 6:45 am and making breakfast for my son and myself.  Then I konk out again.  My son wakes up every day at 8:39 so I just have him turn on some cartoons and eat until I'm ready to get up.  But now, I'm feeling so guilty.  I'm just so tired in the morning because I can't sleep!   Is this just me it what?!