E.I.
you are fine. as long as you are breastfeeding, like your doctor says, you dont have to worry about it.
the thing is that with breastfeeding, so much of what baby gets is used! this is good! less waste! formula fed babies have excess stuff that they have to get rid of and because of its concentration and etc, they can usually end up constipated.
as long as there is no blood in the stool, and as long as your baby doesnt seem like he is working SO HARD on going, theres nothing wrong! breastfed baby's stool should be very very soft.
i wouldnt worry too much about your diet, as it is good for baby to get the different flavors from your milk. you are doing the right thing by just enjoying foods. there are some foods that might bother baby, i couldnt eat green peppers or basically any food that gave me gas cuz it would give my baby gas too! so use your knowledge about foods for you and just eat small amounts of everything so your baby knows all different flavors!
great job mom for breastfeeding your son and giving him the best possible start.
www.llli.org - le leche league - find a group in your area and attend as many meetings as you can. there you will find not only an educator, but other moms who breastfeed, giving you support and encouragement in an otherwise disconnecting, formula based world.
WAY TO GO!! keep up the good parenting!