I went to an accupuncturist a few times several years ago. I didn't get any relief, but my health problems are very complex.
Re: contracting blood born contagious deseases, an accupuncturist should only use disposable needles. If you don't see him/her take the needles out of the sealed wrapper with your own eyes, don't use that practitioner.
And watch out if he/she tells you you're going to get the "dragon treatment". That's done on the ankles and hurts like hell. I have no idea whether or not it works. It might be worth it if it does. Didn't do a thing for me, but I didn't stick with it for very long (ran out of money).