Depo very commonly causes irregular periods. If you were my patient, I would do a pregnancy test right away to be sure that is not the reason for the missed period.
If the test is negative, I would chalk it up to the Depo shot and wait and see what happens during the next few months.
Hope this helps!
I was a little worried the last couple of days about being pregnant so I took a Home Pregnancy Test and it was negative. Being on Depo birth control would not effect a home pregnancy test would it? I made an appointment for Friday. Thank you so much for your answer