hi.. i had my belly pierced.. but you may have to take it out as your belly really expands,i did as i was huge.. i had mine in till i was 22 weeks pregnant.. i really didnt want too as it took me weeks to pluck up the courage to have it done in the first place!!
i cant have mine put back in as i developed gall stones after having DD and thats where they had to have one of the cuts..
as for the nipple ring not sure on that if breast feeding it might be an issue talk to your doctor about it and he may have a few ideas!!!

me 28 dad 25
DD;november 06