i have been on the depot shot for three months my period did not come the fourth month what should i do
Doesn't seem likely, see this link: http://www.nlm.nih.gov/medlineplus/uterinecancer.html
you may be pregnant!
That would be a reasonable guess. Next step is probably a pregnancy test.
It means ur pregnant
if you are pregnant it can cause you to miss some periods
Pregnancy
Malnutrition
Most women miss there first months period after becoming pregnant. Some have their period throughout pregnancy.
You should go see your doctor. Stress can cause you to miss a period, but three months is a little extreme.
I've been on yaz for 5 months and never miss a period
you might be pregnant