Took 18 months for us to get pregnant after coming off of the depo shot
I got a positive two days before my period was due - you could try an early response test if you're within a few days of your expected cycle or you could wait a bit longer...
My friend was on it for years thats y it toke so long, its just a waiting game, wait untill about 4 days after your missed period then take a test.
Its the waiting thats anoying, good luck. :-)
I only had one dose I was supposed to get it may 16th but surprisingly they ran out of shots (Yes stupid I know ).
Take a test after your period is late, when did u stop the depo injection, my find stopped taking that it toke her 7 months get pregnant, because she had to wait for her periods to become regular. It just depends on your body.
Good luck. :-)