Thanks for the query.
can cause side effects like nausea
, boating sensation, menstrual irregularities etc.
So all the symptoms you are having can be side effects of the depo.
Usually these will subside soon and may not need any treatment.
If the symptoms recur you can go fro symptomatic treatment.
After that also if the symptoms persist you consult gynecologist and discuss about changing the contraceptive
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429