Nothing to worry about. I've given birth 4 times and my colostrum only came out on the 2nd day after birth. Keep latching baby or pump after birth. It will stimulate the milk to come out. Your boobs have start to leak already w/o you noticing. Usually on the 2nd trimester-3rd. They're normally whitish to yellowish (like extra skin & you can peel them off or wash off) and you can see on your areola.
Hy.. don't worry, mybe your milking time are not there yet.. Sometimes, the milk will come out if the baby sucking the nipple.. Once the baby delivered, the milk will come out.. Trust me 😊 You should read more about breastfeed, skin to skin with baby encourage the milk to come out.. Good luck💕