Nausea and vomiting can be treated with antacids, Compazine, Tigan, or Zofran

vomiting is definitely a sign of pregnancy but i don't know about nausea.

Nausea is the sensation of being about to vomit. Vomiting, or emesis, is the expelling of undigested food through the mouth.

Hyperemesis, or extreme nausea and excessive vomiting, occur in about 1% of pregnancies

Nausea is the sensation of being about to vomit. Vomiting, or emesis, is the expelling of undigested food through the mouth.