How long did your SO have his Vasectomy?

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I’m wondering how long everyone’s SO had his vasectomy. My SO has had his done for 7 years for his ex and we don’t plan on trying for 5 years. (Our VR doctor said it’s okay we wanted to wait. That he’s done plenty of men over 14 years and some 40 years and all had babies) so I want to hear some of your experiences?