Nipple piercings.

I got my nips pierced back in the day this year, I always keep them clean. Once a week, every other day or every other couple days. Since being pregnant idk if I want them pierced, but they were also expensive and it would be a waste of money to take them out. They sink more since being pregnant and it's a pain in the ass to clean them every day. Is it a pregnancy thing as to why they are gross smelling? I'm a clean person and take care of myself. So I know it's not a me thing.