Hi
I was on the depo shot for two years , I got off in Oct 2010 so I have been off it for 5 months now , I am trying to get pregnant before my fiancée leaves in June. I had a period in December but haven't had one since only spotting in January which only lasted one day ; how long should it tAke for me to conceive ?

With depo it can take a few months or many. Unfortunately, some women will find it takes a year or so.
Without regular cycles, it makes it a bit more challenging to determine when you might be ovulating.

As you continue to try, focus on making all the changes you can think of to help insure a healthy pregnancy and baby. Eat and drink what you know you should, avoid those things you know would be wise, be sure to take a prenatal or multivitamin with at least 400 mcg folic acid in it while trying to conceive. Get adequate rest, regular exercise, practice relaxation, etc..

Hopefully it won't be too much longer for you!