for you. I know what its like to be worried about your newborn and feeling like your milk is never going to show up. Its a stressful time. My baby girl has always been a healthy eater and she was not satisfied with colostrum those first few days, boy was she pissed lol. It took me about 3 days before my milk came in but i've heard that it can take 4 or 5 days. The GOOD news is your babys is getting plenty of colostrum, which is called liquid gold for a reason--its chock full of antibodies and immunoglobulins which are very important for building their immune system. It also helps their digestive tract and makes it easier for them to have their first bowel movements (which shows she is getting plenty since she's had 3 or 4 poopy diapers). Also, its normal for them to lose a little weight during this time, up to a pound or so is considered okay. Its also a good sign that she is peeing plenty. I would only be worried if she wasnt peeing much or she seemed weak or pale--then that could mean she's dehydrated. It sounds like she's doing just fine. If you're really concerned then take her to a pediatrician or call your doctor or midwife.
You could pump for five or ten minutes after each feeding to stimulate the milk flow, but make sure you stop doing that once your milk is in full force because that would make an oversupply. Also, you could drink a few cups a day of this tea: http://www.amazon.com/gp/aw/d/B0009Y8AGI/ref=mp_s_a_1_4?qid=1372397934&sr=8-4&pi=SL75
. Eating a well-balanced diet with plenty of protein, small, frequent meals and lots of water is helpful, too. Oatmeal is said to be great for the milk supply as is a fenugreek supplement.
I wouldn't worry too much, though, because it sounds like your daughter is doing great, just impatient. You probably wont even need to take any supplements or do anything special. Your milk will more than likely come in in the next day or two, if not then i would consult a medical professional. You will know when your milk is in because you'll more than likely get super engorged. Just watch--by the weekend you'll be posting on here about how to relieve engorgement