sometimes your baby is unwilling to leave your nipple, is not because that he is still hungry, he may need sucking to get more comfort; if you continous give him the formular after breastfeeding, you will finally suffer from " short of supply" and cannot breastfed him, i am telling you the truth because most of my friends are exactly like this as they don't hear from me at the begining.
so are you still on leave ? as long as you are with baby, you should directly bf him , do not add any formular, when he cries, offer your breast.
if you just offer him the right side after 1/2 hour, you can offer another side. and if he is still not enough, offer the right side again.
also, you have to sure baby can open his mouth widely to eat the hindmilk, once he can get the hindmilks, he should be full.
i understand you have emotions when seeing those message , because your hormone will change because of your pregnancy also. but you should release yourself, cannot only concentrate on this area, otherwise you cannot come out from this difficult situations. remember that you can breastfed your new baby and "Tung Tung" after baby born,
don't be upset.
but don't hide up your unhappiness, suggest you write down it and then you can pass this message to your Tung Tung to see when she grows up, it is another way to continous your sweat relationship with her, and of course, you still have longer roads to raise up her and your new baby, like : teaching her how to do homework, playing, bathing...
here all moms would like to see a happy pregnant
woman , rather than a unhappy mother, otherwise you will affect your new baby.