Studies have shown that babies who are carried a lot tend to cry less than other babies. The other extreme of that is that he has been overstimulated, and needs rest and sleep. Try moving him, rocking, cuddling, talking to him. Obviously if his unexplained unhappiness persists, seek medical advice. For the first few days after birth, the baby will be drinking colostrum.
Colostrum is thick and creamy, is rich in protein but low in fats and carbohydrates.
It also contains anti-infective properties which allows the baby to build up immunities. Day by day until the end of the first week, the stools will get lighter in colour until they are yellowish, and his daily urinary excretion will increase on a daily basis. Whilst often called morning sickness, nausea experienced in pregnancy can affect women at any time of the day. There are no fully comprehensive answers as to why this happens. It is generally assumed that the hormonal changes in the mother's body cause the nausea.