Growth spurt or am I being punished???

Since Sunday, Rudy's eating schedule has...well... been non-existent.  He eats allllllll the time and all sorts of intervals.  I'm getting very overwhelmed and frustrated.  I looked up some information on growth spurts and he should have one between 4-6 weeks...right where he is.  And it says they will want to eat every 1-2 hours...check.  It also said they can last 2-3 days, up to a week...ugh!  I am going to give it another week and see how it goes.  Between the wedding ordeal and the craziness this past week, I am dangerously close to throwing in the towel on breastfeeding.  I'm having a really hard time making the decision because I feel like I'm a bad mother if I stop.  As if I am too selfish to put Rudy's needs before my own and it makes me feel incredibly guilty.  I worry that this isn't a growth spurt and I'm not making enough milk for him, which makes him come back for more so often.  Of course I read that is a normal concern.  I talked to John and my doctor about it yesterday.  The Doc suggested I start supplementing with formula...even just nursing once a day will be beneficial, he said.  He also said breast milk is better, but the differences are not different enough to cause any significant impact, that the way we raise him will be much more important than what I feed him.  And to not feel guilty, etc, because there are several moms who choose to not breastfeed and their babies all turn out great (my mom was one and I think I turned out ok...Tony on the other hand, welllll... just kidding, Ton!).  John and I discussed the topic and I am going to keep at it for another week.  We don't have anything going on so I don't have to worry about when he eats for us leaving the house, or how long we can or can't stay somewhere, etc.  And if this time next week I am still having problems and its too much, we are going to slowly start supplementing with formula and see how that goes.  Even adding in one bottle, he might get satisfied and get back on track each day.  And then we will just go from there.  He is only 5 1/2 weeks.  If this is just a growth spurt and he starts getting more routine and regular, the whole breastfeeding thing wouldn't be so bad (as long as I am with him...pumping between feedings will be a whole other skill to tackle).  Until he gets to 8 weeks, I read (thank God for people who write books!), its normal for his eating and sleeping schedule to be erratic.  So deep breaths... one day at a time... see why I am having such a hard time with this decision?!  Even just writing this I am all over the place.  We will revisit the topic in one week...until then I am not going to agonize over it.  Period.