It's hard to imagine that having been on Depo that long ago would have any effect on you at all by now. Have you been charting your cycles to see if your periods are regular?
The easiest thing to do first is for your boyfriend to get a sperm analysis done. He can see his doctor about this, maybe get a referral to a urologist.
Yes is been 11years since I've been on the shot but I just start trying a year ago
You have been off the Depo shot for 11 years?
I would go and see a doctor if you've been trying that long..