It is normal and common that breastmilk doesn't come in for the first few
days.
Instead, usually you would have colostrum (first milk). The color is clear
to yellowish. It's full of nutrients and antibodies.
I suggest you to keep the baby skin-to-skin on your chest and between your
breasts (pretty much 24/7). This encourages your baby to nurse more
frequently, and therefore helps bring in breastmilk. Even if no milk, the
sucking is your baby's way to tell your body to make milk. Typically nurse
every 1 to 3 hours. It's normally okay to have one long stretch of not
nursing (about 4 hours or so) a day. If there's sign of problem, not sure
if it's a good idea to have even one long break a day. It's demand and
supply.
For latching issues, get help -- breastfeeding groups, lactation consultants
, etc. The key is to make sure the baby opens his/her mouth really really
wide, right before going on your breast. His/her bottom lip needs to cover
the area around the nipple (areola) as well. Otherwise you'll suffer. Have
trust with yourself and the baby. Stay calm yourself, and baby's emotion
can be affected by you. Take a slow, deep breath.
Is the baby okay?
1) It's normal for a newborn to lose weight during the first week. Ideally
no more than 10% of birth weight.
2) It's the baby pink?
3) How's the baby's breathing?
4) It's the baby overly difficult to be waken up?
Best wishes.