I had mine done over a year ago, I tool some strong paracetamol half an hour before I went and it didn't hurt at all. Just a bit like a smear. I bled for 3 weeks and then had 2 periods in 6 months, though no they are looking more regular!!
Like anything else hun you wont know it's for you unless you try it, though I do love the idea of not having to worry about it for 5 years!!
xx