With pain, we can psychologically induce it. Worry about it, you'll start to feel it. The mind is a crazy thing. You've had pressure on and off since your teens. A good question for your doctor is if you'd expect this to remain the same or increase with the procedure and what the percentage rate they see in their practice for it. The statistics I read are only 1 to 2 percent of the large number of men that have a Vas. get this type of pain. It's very rare. Since you have had it on and off and many men do, kind of normal, really it would then be safe to say you will have it on and off after a vasectomy unrelated to the procedure, right? Personally, I wouldn't let this scare you off of something that will probably make your wife pretty happy if she doesn't want anymore kids. But there is risk in every single thing we do. This is pretty low risk though and I wouldn't worry about it.