Blood work normal and was on depo

So I got a call from my obgyn all my blood work came back normal so now I am so much more confused then I ever was. I am going in Wednesday for an ultrasound to see what's going on. The only thing they didn't test was estrogen level. I was on the depo shot for 5 or more years and I'm thinking that's why I am having these issues. Anyone else do the depo shot and have issues getting pregnant after??