My 6 week-old has nursed non-stop for the last two days; should I be concerned about my milk supply?

As long as your baby is still having the same number of wet and soiled diapers, there is no reason to panic.  It is normal for a baby at around this age to change his nursing pattern. When a baby starts nursing non-stop for a few days it usually means that he is growing. After a few days of frequent nursing, your baby will fall into a new nursing pattern with your recently increased milk supply.  We call these episodes “growth spurts” or “frequency days”.