Hayley, I had mine done about 6 or 7 years ago, and I had both done at the same time, because I wanted to be symmetrical
lol (OCD rocks), and cos I thought if I only had one done and wanted the other done at a later date, I might chicken out if it was very painful. As it turned out, one didn't hurt at all, the other hurt like fuck! But, was over very quickly, and with piercing, the procedure is part of the 'ritual' I think (I ain't twisted_bird for nothing
lol). Personally, I prefer a bar, because the BCR rings look like door knockers to me
lol. I only have one now though, because I took them out, forgot to replace them, and then put rings in, and then when I tried to change back to bars, I couldn't get the one bar back in. So, one is good
You do have to be a tad careful, and it's a good idea to wear a bra to bed, because they will be mega mega sensitive, to the point of painful! But I suppose everybody's different, and each person you ask will have a different story to tell.
(now preparing for some strange looks at the next club meet I go to

)