Depot provera is a hormonal injection.It is not as reliable as contraceptive
pills. She may have inter menstrual bleeding
or spotting with this injection. It will stop her menstruation
for 3 months.
Nowadays many low dose contraceptive pills like novelon and femilon are available in the market with least side effect. She will conceive when this drug is stopped.Other way also depot provera also does not interfere with fertility
and one may conceive after stopping it.
Depo provera will not cause nausea.But 1st episode of bleeding after stopping it , may be heavy.