Is it possible to get pregnant 4 days after your missed period and you just got off the depo shot in December?

Yes, it is possible to get pregnant 4 days after a missed period, especially if you just got off the Depo-Provera shot. The hormone levels from the shot can take some time to completely leave your system, but ovulation can occur as soon as a few weeks after the last injection. If you are sexually active during this time and ovulate, conception could happen. If you suspect pregnancy, consider taking a pregnancy test for confirmation.