Im 24.::.on depo shot since December 3, 2012.::.did depo shots 2006-2010.::.2010 taken off depo and put on the pill til 2012.::.decemeber 2012 started taking depo shot again; next shot should be April 3 (for 12-13 weeks).::.since 2006 I've never missed a scheduled depo appointment or pill at correct pill time