Hi,thanks for query.No,it is not normal.Nausea and vomiting
at nine month needs to be treated energitically as any form of dehydration
or strain to abdomen can lead to problems in pregnancy
.Some kind of discomfort in stomach along with indigestion
is common at this time as enlarged uterus pushes stomach away.Please talk to your doctor and find out the cause.
wishing you good health.