I took my piercings out at 26 weeks. Colostrum is coming out of the holes.
When you breastfeed with nipple rings it is important to take them out BEFORE feeding and then disinfect them before putting them back in or infection can start and transfer to the baby.
to go with what everyone else said about taking them out, i was told be careful since milk comes out of the piercing holes it can come out really fast for baby. told to try recline when feeding to slow gravity