frequency of ... poo?

littlebriderachel

My DS is 4 weeks, will be 5 weeks on Wed.  I've read that it is normal for BF babies to have bowel movements as frequently as every day, multiple times a day, or AFTER 6 WEEKS, it could slow down to as few as every 3 days or sometimes only once a week. 

 http://www.mother-2-mother.com/normal.htm#NormalStools

 My question - DS hasn't gone in almost 48 hours now - he's not even 5 weeks.  His belly doesn't feel hard, and he's peeing like a champ.  He's not fussy.  Would you be concerned enough to call the pediatrician??  Thanks