Had one on January 2015, bilateral mesh done arthroscopic. I had a post-op issue where the local xylocaine injection got too close to the bladder and I needed catheterization to empty my bladder; spent about 24 hours in recovery rook for what otherwise should have been four hours as they (rightly) refused to release me until I could urinate under my own power.
Post-op, my balls and lower abdomen hurt for a few days; I seem to recall taking oxy for a day or two and acetaminophen for another three days or so. Was back to work in less than a week, back to a full body workout in thirteen days. Training logs for that period are here.
My surgeon told me unless there's pain there's no reason not to go back to it. "If it hurts, stop," was the guidance, much to SWMBO's dismay.
Mostly, the hernia operation and recovery was an annoyance more than anything else.
Haven't had a problem since.