I had a no-scalpel vasectomy 6 months ago. Recovery seemed fine, though I had a bit of soreness for a week or so. Over the next few weeks, I experienced more soreness -- constant dull aches, but sharper if I stood up quickly after sitting. The urologist checked and said there was some "congestion" in the tubes, essentially, and prescribed Naproxen, which seemed to help. After a cycle of that and some time off, the aches returned.