I haven't had my period since september the 25th i believe i've had spotting here and there but thats it i was on the depo-provera shot but i got the last shot ?

See your doctor: And get a pregnancy test....Failuyre rate of Depo Provera (medroxyprogesterone) is very low but not zero.

Clarify question: If you have been practicing abstinence or an alternative form of contraception irregular menses up to a year after stopping depo-provera is not uncommon. However, a pregnancy test first thing in the morning will help as well.