Re: milk supply suddenly gone?
As long as the baby continues to produce adequate numbers of wet and poopy diapers- here's a handy reference: http://kellymom.com/bf/got-milk/supp.../enough-milk/- you know she's getting enough to eat. With a baby this young, it's also important to watch for a few other things, like feeding frequency (a baby this young should be eating around 10-12 times a day), sleepiness (extremely sleepy babies sometimes don't feed often enough), pacifier use (babies are sometimes so content to suck on a paci that they will ignore their own hunger cues), and your comfort (if nursing causes you a lot of pain, or you're getting cracked/blistered nipples, that can indicate latch problems which can impact milk supply). Basically, as long as you're nursing enough, seeing enough wet/poopy diapers, not subbing in a paci, and not in extreme pain when you nurse, you can assume that baby is getting enough and will have gained plenty of weight by her next appointment.
One thing that happens to a lot of moms is that they start out making more milk than their baby needs. This is nature's way of ensuring that a weak, uncoordinated newborn gets plenty to eat as she masters the art of nursing. When a mom is making extra milk, she's likely to feel full or engorged fairly often and to experience strong or stronger letdown sensations. But making extra milk is a waste of energy, can make nursing harder for the baby (it's hard to latch onto a very full breast, and the milk can come out so fast that the baby will have difficulty keeping up), and can put mom at higher risk for things like plugged ducts and mastitis. So after a mom has been nursing for a while, her body detects that excess milk is being produced and reduces supply to a level which is closer to what baby needs. When this adjustment happens, it is normal to rarely if ever feel full or engorged, to have your letdown sensation lessen or disappear, to leak less or not at all, and to pump less (if you've been pumping, which at 2 weeks you shouldn't be).
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"