Both at once? I had one done... later the ring started growing out on one side, and it looked stupid so I took it out.
Yes. Well, my left first and then my right- but they were both done in the same appointment. I got 12 gauge barbells which are normally a better bet (than rings) to prevent infection and rejection. Hopefully I won't have to deal with rejection. I haven't had any problems with any of my other piercings, so hopefully these will be the same.
yay! i've had mine done for almost three years now. honestly, i didnt think they hurt at all to have done, but i think i have a fairly high pain tolerance as i think tattooing feels kinda good (at least until about three or four hours in, when you start getting sore). i had mine pierced with 10g straight barbells, but after they healed i had them changed to 10g circular barbells which i love.
i dont know what your piercer has you do for aftercare, but remember, sea salt soaks are your friend! i wouldnt recommend overwashing them with soap, but rather just soaking them a couple of times a day with sea salt (1/4 teaspoon sea salt per 8oz water) for about 10-15 minutes and afterwards gently cleaning off any gunk with a q-tip. but it sounds like you know what your doing with piercings, so you probably dont care much about what i have to say