Congratulations mummy! You've only given birth 2 days ago so don't worry too much & try to rest up. Milk takes a couple days to come in (mine took 3-4 days) and the amount at first will be minimal but very nutritious (colostrum).
Latching also will take some time, mine took 2 weeks to latch properly. Just keep on trying and if you're worried just feed baby expressed milk via syringe or cup. Power pumping means pump 20min - rest 10min - pump 10 - rest 10 - pump 10. That will help increase supply.
If you still have difficulty, try to find a lactation consultant. Some hospitals will have a lactation consultant visit you at the hospital.
All the best and don't give up on breastfeeding! It's going to be really tough but very rewarding.
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