I have a 28 month old and am thinking about getting pregnant again, but am nervous about breastfeeding. I don't feel that my toddler is ready to stop nursing but I am afraid that I will not have enough energy while pregnant. I am also aware that breastmilk changes to the needs of the child as the child gets older...such as fat content, etc. So what happens when you breastfeed an infant and toddler? Does it change to the infants needs? Is this detrimental to either child? Just looking for advice from experienced moms.