nipple piercings and roller coasters

I recently just got my nipples pierced about 2 1/2 weeks ago and i was wondering, do you think they would be okay to get on roller coasters with? they don't hurt or anything & they're healing up extremely well. should i put something over them like band aids for extra precaution? or wear an extra bra? I don't know. im just worried they'll rip out.