Expert Q & A Answers About blood sugar

I have diabetes...what is retrograde ejaculation and is it curable? Does it mean I’m sterile?

I am a 32-year-old male, and I have diabetes and use insulin. Over the past five years, I’ve noticed that the amount of semen I produce has drastically decreased. I have read in a medical encyclopedia that men with diabetes often suffer from "retrograde ejaculation." Is this the cause? Does it mean I'm sterile?