Pregnancy after Depo-provera??

Tara
I  25 and had been on and off Bc since I was 14 due to other health issues. For the last 4-5 yrs I was on the depo shot. My husband and I are ready to have our first baby! My last shot was in Feb so technically I stopped on May. Still not pregnant. 
​I was wondering if any of you had been on depo, and then were able to conceive? if so, how long did it take you!? 
​Thanks! :-)