Beaten to it. It can take time. It was 18 months before a friend of mine was clear. They won't schedule a second op for a long time, so you may need other contraception until the all clear.
I was fortunate to be clear after the 16 weeks, but I have had numberous other issues from my vasectomy, including further invasive surgery. Still in considerable pain 19 months after the 'snip'.
Even testicle removal has been ruled out of getting rid of pain, so living on a combination of 30-60mg of codeine and 1000mg of paracetemol until I can be referred for a nerve block - that may not work either.
I've even complained to NHS GP Commissioners about the treatment I had, and neither the operating GP nor my own GP had responded, only my surgeon for the second op. I'm now going down the legal route as complications were not discussed, or indeed told they were so rare it was not a worry, when long term chronic pain is common - 1 in 10
My advice, wait and avoid more surgery down there as additional scar tissue will build up, and the possibility of chronic pain will increase.