Just got my first chastity device today. My wife has a concern though.

HI, I just received my first chastity device in the mail today (CB6000). I'm doing this because I want all my ejaculations to be "wife-induced" and this is a great way to show her that she can be control of that. She is leery of me using it though because she thinks that something which seems so tight around my balls could potentially cause fertility issues. We still plan to have more children, so that would be a big issue. With all the people out there using these things, one would think some kind of study might have been done, but I cannot find anything out there on the subject anywhere. I assume that many people here who are locked up regularly have still been able to have children, and that may be the only "study" I can do on the subject. Any thoughts??